• Projects -
  • Rating -
  • Rating 561

Budget: 450 EUR Deadline: 5 days

Hello!

My name is Evgeny, and I have been professionally developing mobile applications, websites, web services, and web applications for 7 years.

*The cost mentioned is for 1 hour of work. To provide a more detailed price, I would like to connect/call and discuss the details.

- You can review my portfolio, feedback, and awards in my profile.

Why should you choose me?
- I have taken 1st and 2nd places in international championships and competitions in the IT field.

Freelance - platform Contractis
  • Projects 30
  • Rating 5.0
  • Rating 5 747

Budget: 450 EUR Deadline: 5 days

The deadline is 5 working days for the first stage. The budget is 450 EUR. 150 EUR, in my opinion, will only be enough for a superficial check, and there is already a visible risk of losing orders, cart cache, and the substitution of previous customers' data in the checkout.

Look, there’s a nuance - the previous customer in the form and disappearing orders are more important than regular OpenCart adjustments. I would start with a technical diagnosis of the two sites, checking sessions, cache, cart modules, the Nova Poshta module, the necessity of phone numbers, and error logs. Then, prioritize adjustments, test orders, and a short list of what needs to be taken out for separate optimization.

> What version of OpenCart and which checkout, cart, and Nova Poshta modules are installed on each site?
> Is there access to the admin panel, FTP or SSH, hosting, and error logs, plus can test orders be made?

> https://business.ingello.com/prime-eva - close in e-commerce and reliability of product-order scenarios
> https://business.ingello.com/eva - retail, catalog, operational processes, and sales stability
> https://systems-fl.ingello.com - Ingello Systems profile on FLH

Mobile app with admin
Andrey K.
1 287 1
  • Projects 1 291
  • Rating 5.0
  • Rating 103 511

Budget: 250 EUR Deadline: 7 days

Hello. I have extensive experience with OpenCart. I am ready for collaboration.

  • Projects 13
  • Rating 5.0
  • Rating 4 233

Budget: 150 EUR Deadline: 3 days

Hello, Bohdan!

I specialize in the refinement and support of online stores on OpenCart, including complex bugs in checkout, cart, multilingual issues, and performance problems. From your description, it is clear that some of the issues already involve not only the frontend but also session logic, caching, AJAX updates, and possibly module conflicts — especially with the first site.

On hbdeadsea.com.ua, the problems appear critical for sales: loss of orders, incorrect cart functionality, substitution of foreign data, slow checkout, and errors during order placement. Such bugs usually arise either from conflicts with modifiers/themes or after unsuccessful refinements of checkout and caching. It is also necessary to separately check session handling, AJAX requests, New Post modules, and mandatory field processing.

For c4y.ua, the situation seems more like caching issues, JS logic of the cart, or incorrect functioning of OCmod/VQmod, plus it is necessary to look at multilingual functionality and the correctness of connecting the Ukrainian localization.

On my part, I can conduct a full diagnosis of both sites, find the causes of conflicts, fix the cart and checkout functionality, restore correct order creation, check for data loss, speed up page loading, and bring the stores to a stable state without "workarounds." I can also check the server side, caching, database, and load, because with such slow performance, the problem often lies not only in OpenCart but also in hosting or unsuccessful optimization.

  • Projects 8
  • Rating 5.0
  • Rating 2 290

Budget: 150 EUR Deadline: 3 days

Hello, Bohdan.

This is a classic set of bugs in OpenCart that accumulates after updates or module conflicts with the theme. I will go through the list briefly.

hbdeadsea.com.ua:

1-2. The cart widget does not update and clear: almost certainly the AJAX handler cart.js or event delegation is broken after the cart module update.

3. Inserting foreign data in the form (full name, phone): this is a security incident, not cosmetic. Somewhere the session/cache is storing customer data between requests from different users. Without session auditing, it cannot be fixed; this is the first thing I will address.

  • Projects -
  • Rating -
  • Rating 197

Budget: 150 EUR Deadline: 2 days

Improvements for cosmetic websites on OpenCart are a non-trivial task. I will use Playwright + mitmproxy for interception, wrapping it in a REST API on FastAPI — the client will receive ready-made endpoints. I did something similar for a marketing agency — parsed Instagram Stories through a reverse-engineered API, delivered in 4 days. To start working, I need to know the version of OpenCart and what specific issues need to be resolved.

  • Projects -
  • Rating -
  • Rating 427

Budget: 300 EUR Deadline: 4 days

Familiar situation: I have had to fix this multiple times. I am ready to take it.

  • Projects 7
  • Rating -
  • Rating 485

Budget: 145 EUR Deadline: 4 days

Hello. Fullstack development experience of 5+ years in Opencart.
I have great experience in similar tasks.
Everything will be corrected, refined, and optimized with high quality.

  • Projects -
  • Rating -
  • Rating 212

Budget: 150 EUR Deadline: 2 days

Hello, Bohdan! The categories chosen are absolutely correct, as the issues you described are not just minor layout tweaks, but serious technical failures in the architecture and security of both sites.

As a specialist in OpenCart development, I clearly see the critical vulnerabilities that are currently cutting into your sales.

My quick diagnosis based on your specifications:

Data substitution of foreign buyers (Site 1, item 3): This is a critical security flaw (personal data leak). It arises from incorrectly configured server caching (Nginx/LiteSpeed), which caches dynamic checkout sessions. The server configuration needs urgent correction.

Issues with the cart and item 133 (Site 2, item 1): On the second site, the cart widget likely has a hardcoded (statically defined in the theme code) product ID 133 from some old tests. The dynamic output of the array needs to be restored via AJAX.

  • Projects -
  • Rating -
  • Rating 247

Budget: 399 EUR Deadline: 5 days

Good day! We saw your vacancy and are confident that we can be the partner you are looking for. We are the CherryX Digital team. We create websites that not only look good but also solve real business problems: attracting customers, working steadily and without failures. Our specialization: Landing Pages, corporate websites, online stores UI/UX design with a focus on convenience and conversion. Why it is comfortable to work with us: We meet deadlines, are always in touch — no disappearances or responses of "tomorrow." We are ready to immediately show examples of our work and offer specific ideas for your project during the first call. Write to us — and we will discuss the details 👋

  • Projects -
  • Rating -
  • Rating 196

Budget: 450 EUR Deadline: 5 days

We already have a nearly ready set of solutions for the OpenCart cart, checkout, Nova Poshta, and multilingualism, which can be quickly adapted for your two websites and discussed here; I am available to chat.))

Regarding the price - I would consider 150 EUR more as an initial diagnosis, while stabilizing the two websites with critical fixes I estimate starting from 450 EUR.
For the timeline - 5 working days for the first phase.

For hbdeadsea.com.ua, I would first check the cart sessions, asynchronous widget updates, clearing after orders, the final checkout step, the requirement for a phone number, and the order loss logs.
For c4y.ua, I see a separate risk in the language module and cache - the Ukrainian page is accessible, but the main one may pull the Russian locale, so here we need to go not through the texts manually, but through the logic of switching languages.

We can proceed in stages - first eliminate order losses, old customer data, and cart failures, then speed up the checkout and pages.
From you, I need access to the admin panels, FTP or SSH, the database, and error logs, plus access to Nova Poshta within the framework of the exchange.

  • Projects -
  • Rating -
  • Rating 229

Budget: 200 EUR Deadline: 5 days

Hello! We are a team of developers with a 4-year background in e-commerce and website support. We have extensive experience in refining stores on OpenCart, so we will tackle your tasks quickly and without unnecessary questions. Fixing bugs in the cart, setting up filters, updating modules, or enhancing the mobile version for cosmetics websites is our usual profile. We work cleanly, without affecting live functionality, and we always test everything on a copy of the site before release. Check out the level of our e-commerce implementations: espressolab.com.ua. Please send a list of refinements in private messages, and we will evaluate each task separately and agree on a final work plan.
Estimated price: from 250 to 450 euros.
Estimated time: from 7 to 12 days.

  • Projects -
  • Rating -
  • Rating 1 202

Budget: 450 EUR Deadline: 5 days

Bogdan, the categories of CMS and Web Programming are chosen 100% correctly. The described issues with the cart, AJAX widgets, customer sessions, integration of Nova Poshta API, and critically low loading speed of OpenCart are deep technical bugs that require work with PHP, database (MySQL), JavaScript scripts, and the architecture of the CMS itself.

I can conduct a full technical audit of both your cosmetics websites, localize the causes of failures, and promptly eliminate these critical bugs that are currently literally blocking your sales. I have extensive experience in developing, refactoring, and speeding up e-commerce platforms on OpenCart at Websention. I clearly understand the logic of session management (system/library/cart), the mechanics of AJAX requests to the cart, and the nuances of configuring quick checkout modules (like Simple Checkout).

  • Projects -
  • Rating -
  • Rating 663

Budget: 150 EUR Deadline: 1 day

Ready to take on the project and complete it within the specified budget in 2 days. Examples of work:
coreme.app
https://mnwave.org/en

  • Projects 5
  • Rating 4.9
  • Rating 1 321

Budget: 150 EUR Deadline: 3 days

Hello! The task is clear, the scope of work for both websites is fully understood. The described issues are critical for conversion (especially the checkout hanging for 8 seconds, the non-clearing cart, and the autofill of foreign data), and they need to be addressed as a priority.
Given my **14 years of experience with OpenCart**, I know the architecture of the engine and the logic of sessions/caching thoroughly.
Before starting the corrections, I **will conduct a full audit of both websites**, including a review of the mobile layout and checking error logs.
Here is a detailed breakdown of your specifications and my action plan:
### Website 1 — hbdeadsea.com.ua (Issues with cart, checkout, and speed)
Most symptoms (products not updating without a reload, old products remaining, foreign customer data being pulled) indicate **incorrect server caching** (for example, hard page caching along with sessions via Cloudflare, LiteSpeed Cache, or FastCGI) or a critical error in JS/Ajax that breaks the PHP session recording.
**What I will do:**
1. **Issue 1, 2, 3 (Cart and foreign data):** I will check the caching settings of the hosting/server. I will exclude dynamic components (cart, customer sessions) from the cache. I will fix the Ajax scripts for updating the widget so that the cart updates instantly without reloading the page.
2. **Issue 4 and 9 (Slow performance and 8-second checkout):** 8 seconds per step is likely due to hanging external API requests (for example, a long response from Nova Poshta servers when loading cities/branches) or "heavy" unoptimized SQL queries to the database. I will profile, optimize the database, and set up local caching for Nova Poshta branches to ensure steps switch instantly.
3. **Issue 5 (Error at the final step):** I will study the server logs (error.log) and OpenCart logs. I will find the cause of the failure (often related to sending email notifications that "hang" the script, or a conflict with the payment module) and fix the error.

  • Projects 45
  • Rating 5.0
  • Rating 3 883

Budget: 170 EUR Deadline: 3 days

Hello! 👋

I can take on both websites hbdeadsea.com.ua and c4y.ua: perform a technical diagnosis and fix issues with the cart, order processing, localization, and performance specifically on OpenCart, including cart logic, sessions, AJAX updates, the checkout process, and delivery/payment modules.

🔎 From the description, it is clear that there are complex failures on the sites: incorrect mini-cart updates, issues with sessions or caching, errors in checkout, possible module conflicts, failures in Nova Poshta's operation, as well as a multilingual issue on c4y.ua. These tasks are well known, especially when the site already has custom modifications.

  • Projects -
  • Rating -
  • Rating 702

Budget: 150 EUR Deadline: 3 days

Hello! Ready to collaborate. I have experience working with OpenCart. I offer quality and fast work. Write to me)

  • Projects 39
  • Rating 4.9
  • Rating 7 867

Budget: 150 EUR Deadline: 4 days

Hello, I am ready to work within the budget and finish the website according to your wishes. One of the projects is https://well.ua.

  • Projects -
  • Rating -
  • Rating 232

Budget: 150 EUR Deadline: 7 days

I worked on strefaluster.pl — a premium Shopify store with advanced cart logic, checkout, and integrations. I will apply the same level of e-commerce diagnostics here.

From the description, it’s clear there’s a classic set of issues: a broken AJAX cart handler, session data leakage between clients (this is already a security incident, not just cosmetic), blocked Nova Poshta API, and module conflicts during checkout. On c4y.ua — a hardcoded product 133 in the widget (session error or OCmod) and non-functional UA localization files. I start with diagnosing the causes, not just patching symptoms.

What I will do:
- hbdeadsea.com.ua: fix AJAX cart.js — update the widget without reloading the page
- Clear the cart after placing an order
- Close the session data leak (substituting previous client data — security priority)
- Diagnose the 8-second checkout (server logs, DB queries, external API cache Nova Poshta)
- Fix the error at the last step (order not created — validation/payment module conflict)

  • Projects 70
  • Rating -
  • Rating 2 425

Budget: 500 EUR Deadline: 14 days

Hello Bogdan, I have been working with Opencart for over 14 years.

I looked at the websites, the first one needs a radical approach, the second one is already visually much better.

Technically, both need to be analyzed.

I am ready to carry out all the specified work on the websites, I would be happy to collaborate.

  • Projects 67
  • Rating 5.0
  • Rating 12 742

Budget: 150 EUR Deadline: 3 days

Hello! I will complete your task quickly and efficiently. What version of OpenCart do you have?

My recent works
https://indexfast.pp.ua - fast site indexing
https://mamamia.pp.ua - online store
https://programist.pp.ua/ua/portfolio/ - portfolio of works
https://monitortest.pp.ua - monitor testing
https://keytest.pp.ua - keyboard testing

My portfolio: https://freelancehunt.com/ua/freelancer/romas6ka.html#portfolio

  • Projects 19
  • Rating 5.0
  • Rating 1 762

Budget: 190 EUR Deadline: 4 days

Hello, Bohdan!

Our IT company creates and improves websites that operate stably, quickly, and solve specific business tasks for clients. We specialize in developing websites "from scratch" as well as enhancing existing solutions, increasing their performance and user experience for your users.

We have experience in:
- developing responsive and fast websites on various platforms (WordPress, OpenCart, Shopify, WIX);
- integrations with payment systems, CRM systems, external services, and internal systems;
- optimizing website performance and security;
- setting up analytics and basic SEO tools;
- software development and business process automation: managing customer databases, resource accounting, automating repetitive tasks, integrating with third-party systems;

  • Projects -
  • Rating -
  • Rating 260

Budget: 1200 EUR Deadline: 15 days

Hello
The issues you described on both sites are critical for e-commerce, as they directly block sales, slow down traffic, and, most dangerously, lead to personal data leaks (point 3), when customers see the data of previous clients.

At Lumvex studio, we have extensive experience in deep backend debugging, optimizing high-load online stores, and API integration (including Nova Poshta logic).

Our technical analysis of your problems and the plan to solve them:
Site 1 — hbdeadsea.com.ua (Critical checkout and cache repair)
Cart issue (points 1, 2, 3): This is a classic conflict of incorrectly configured caching plugins (LiteSpeed, WP Rocket, Cloudflare) with WooCommerce Ajax sessions. The checkout page and cart widget have been hard cached on the server. We will set up exclusions for dynamic pages and cookies so that the cart updates instantly, and personal data from previous sessions never overlaps.

Slow checkout and errors (points 4, 5, 7, 8): An 8-second delay and lost orders are related to hanging external API requests (likely a heavy synchronous request to the Nova Poshta database or CRM on every click). We will transition these processes to asynchronous rails, optimize database queries, implement phone number validation at both the frontend and backend levels, and check server logs (Error Logs) to understand why the order is not created at the final stage.

  • Projects -
  • Rating -
  • Rating 387

Budget: 150 EUR Deadline: 5 days

Hello.

It seems that this is not just "one bug," but a mix of issues with the AJAX cart, sessions, caching, checkout logic, and possibly conflicts with OpenCart modules. Especially the situation with previous customer data and missing orders - these are critical issues that are better diagnosed properly rather than patched up haphazardly.

I can go through both sites: find the cause of the cart/checkout issues, check for lost orders, localization, performance speed, and bring everything to a stable state without workarounds.

  • Projects 4
  • Rating 5.0
  • Rating 1 032

Budget: 150 EUR Deadline: 2 days

Hi there! I can take ownership of both sites, reproduce each issue step by step, and fix the cart and checkout flow so it behaves correctly without page reloads and without losing orders. These symptoms usually come from a mix of broken cart fragments or AJAX updates, caching or optimization plugins interfering with dynamic requests, session and storage leftovers that keep old customer data, and slow or failing API calls during delivery and payment steps.

For hbdeadsea.com.ua I will focus first on stabilizing the cart widget updates, making sure the cart clears after a successful order, and stopping any customer details from being reused across sessions. Then I will tackle the slow checkout steps by profiling what each step is waiting on and removing unnecessary round trips, fixing the Nova Poshta parcel locker selection, and making the phone truly required both on the frontend and the server side so an order cannot be created without it. I will also investigate why some orders do not reach admin, because that often points to webhook, database write failures, timeouts, or background jobs not completing. After that I will do a full performance pass, including caching rules that do not break cart and checkout, image and script optimization, and server level checks so pages stop loading so slowly.

For c4y.ua I will fix the cart widget showing the wrong product by tracing the cart fragment or widget state and correcting the update logic, then I will restore Ukrainian localization so the language switch actually changes content and does not get overridden by cache or theme settings.

One extra improvement I can add is a small checkout and cart health monitor on each site. It logs key events like add to cart, checkout step load time, order created, and email sent, so you can quickly spot when something breaks after updates instead of finding out from customers.

https://app.cookiecad.com
https://www.clicknova.de

  • Projects 280
  • Rating 5.0
  • Rating 2 577

Budget: 150 EUR Deadline: 2 days

Good day) I have extensive experience in solving similar problems) You can read in the reviews) Feel free to reach out, we can clarify the details and I can get started )

  • Projects 4
  • Rating -
  • Rating 570

Budget: 150 EUR Deadline: 3 days

Good. Over 20 years of web programming experience. Ready for collaboration.

  • Projects 87
  • Rating -
  • Rating 1 717

Budget: 165 EUR Deadline: 1 day

I can find all the problems and repair them correctly without mistakes or workarounds. I have solved similar issues many times.

  • Projects -
  • Rating -
  • Rating 361

Budget: 150 EUR Deadline: 3 days

EDIT
I looked at your site, ran a couple of tests, the situation is dire)

According to the description, you have critical symptoms:
— the cart is out of sync with the session;
— checkout loses data and hangs on requests;
— some orders probably aren't saved at all;
— there are issues with localization and front-end caching;
— the site is either overloaded with requests or there are heavy hooks/API at every step of the checkout.

  • Projects 83
  • Rating -
  • Rating 2 096

Budget: 150 EUR Deadline: 3 days

Feel free to contact me! I professionally solve problems with OpenCart)
Best regards, Oleg.
__________

PORTFOLIO: https://harukaze.com.ua

  • Projects -
  • Rating -
  • Rating 609

Budget: 150 EUR Deadline: 1 day

The issues appear to be a combination of WooCommerce/AJAX bugs, caching conflicts, errors in checkout logic, and possible problems with sessions/localization.
I can perform diagnostics and gradually fix both sites: the cart, checkout, order loss, the operation of Nova Poshta, localization, as well as speed optimization.

  • Projects 48
  • Rating 5.0
  • Rating 1 812

Budget: 150 EUR Deadline: 3 days

Good day. I am ready to get started today. Write to me, we will discuss. Thank you.

  • Projects 32
  • Rating 5.0
  • Rating 1 815

Budget: 150 EUR Deadline: 3 days

Good day, I have been in web programming for over 9 years. I work with REST APIs, frameworks, and CMS such as Django, Laravel, Yii2, WP, OpenCart, CodeIgniter, etc. I am ready to complete the task. Reviews: Freelancehunt

  • Projects 15
  • Rating 5.0
  • Rating 2 163

Budget: 150 EUR Deadline: 3 days

Good day. I am an individual developer with over 4 years of experience in full-stack development, web security, and e-commerce platform optimization, offering my services for bug fixing and speeding up your websites. I guarantee direct communication without intermediaries and full legal transparency, as I work officially through an individual entrepreneur. I will independently conduct an audit of both resources: on hbdeadsea.com.ua, I will eliminate the data leak in the cart, set up session clearing after an order, speed up the checkout process, fix the order creation error on the Next button, and update the integration with the Nova Poshta API for adding parcel lockers. On c4y.ua, I will fix the bug of dynamic widget updates that always shows the product with article number 133, and restore the functionality of the language files for Ukrainian localization. My approach to treating commercial systems is presented in my portfolio: 3magency.co, https://vilors.studio/.

  • Projects -
  • Rating -
  • Rating 285

Budget: 150 EUR Deadline: 2 days

Hello. Our small team has been refactoring "someone else's code," improving Core Web Vitals, and restoring stable e-commerce infrastructure for over 4 years. We will break the work on your websites into two parallel stages: on hbdeadsea.com.ua, we will eliminate the terrible delays during the checkout steps, fix the event handling after clicking the Next button, restore the mandatory phone field, and set up the selection of parcel lockers, while simultaneously closing the data leak of customers in the cart. On c4y.ua, we will tidy up the AJAX recalculation of amounts and products in the site header and address the multilingual plugin that blocks the display of Ukrainian content. You can check the quality of our code and the level of implementation of online stores at the portfolio links: freshagro.com.ua, farfieworldwide.com, rivnekolo.com.

  • Projects -
  • Rating -
  • Rating 160

Budget: 150 EUR Deadline: 2 days

Good day. My colleague and I have been specializing in technical audits, bug fixing for carts/checkouts, and speed optimization for online stores for over 4 years. The issues described on hbdeadsea.com.ua indicate a critical conflict of sessions, caching plugins, and AJAX scripts, which also poses a serious threat to data security due to the substitution of contacts from previous customers. We will completely rewrite the logic for updating widgets, clean the database, stabilize the integration with Nova Poshta (including self-service kiosks), and find the cause of order loss in the admin panel. On c4y.ua, we will fix the static hardcode or session failure in the top widget (issue with article 133) and configure the substitution of language constants in the localization files for the Ukrainian version to work. Examples of our technical expertise are presented in the portfolio: drkukharevich.rivne.ua, crave-agency.com.ua, jk-solution.com.ua.

  • Projects 12
  • Rating 5.0
  • Rating 1 175

Budget: 150 EUR Deadline: 3 days

Hello. My partner (designer + full-stack) and I have over 4 years of experience in e-commerce development, bug fixing, and optimizing CMS platforms, and we are ready to urgently stabilize the operation of your two websites. At hbdeadsea.com.ua, we are localizing the issue with sessions and server caching, which is causing the cart not to update, items not to clear after an order, and a leak of personal data (substitution of someone else's full name). We will eliminate the 8-second delays and the final checkout error, set up mandatory phone number validation, restore order logging in the admin panel, and update the Nova Poshta API for selecting parcel lockers. At c4y.ua, we will fix the logic of the AJAX cart widget that is stuck on article 133 and restore proper multilingual functionality for complete Ukrainian localization. Our approach to addressing such critical vulnerabilities is reflected in our portfolio: hyperfi.tech, espressolab.com.ua, hudi.com.ua.

  • Projects 35
  • Rating 5.0
  • Rating 1 315

Budget: 150 EUR Deadline: 2 days

Hello, I am well acquainted with OpenCart. I will fix all the errors. I will install modules that speed up the operation of OpenCart, optimize the database, and find errors in it. Feel free to reach out.

  • Projects 19
  • Rating 5.0
  • Rating 1 220

Budget: 200 EUR Deadline: 4 days

Good afternoon, I am engaged in the development and maintenance of websites on OpenCart, ready to fix the site in the shortest possible time. I can start working today. I will need access to the site's admin panel and FTP. Please write to me in private messages for further discussion.

  • Projects 44
  • Rating -
  • Rating 868

Budget: 150 EUR Deadline: 5 days

Good day! I see the problems and am ready to make all the adjustments on both websites. The site is likely slow either because of excessive caching/optimization or because too many modules/modifiers are being used. I can figure it out. I have 8 years of experience with Opencart, feel free to reach out.

  • Projects 44
  • Rating 5.0
  • Rating 4 125

Budget: 150 EUR Deadline: 5 days

Hello,
the tasks are clear, I can take it on, I usually deal with similar projects, which can be seen from my previous projects here.
Regarding the budget, please let me know if 150 is the fixed desired amount for this project, or if we should only use it as a reference?

From the description, I see that I will need to review the order processing module and fix all these errors.
I also noticed on the first site that there are visual issues that can be corrected, such as stretched icons, and there are headings that go beyond the layout. Some element sizes can be adjusted if needed. I can thoroughly review the entire site and write down what can be fixed.
If my candidacy is suitable, we can discuss the details further, and I can start since I am currently almost fully available.

  • Projects 11
  • Rating 5.0
  • Rating 2 257

Budget: 149 EUR Deadline: 4 days

Good day!
I have looked at both websites and the description of the problems. I see typical OpenCart bugs — cache, AJAX cart, checkout. Everything is solvable.
Regarding hbdeadsea.com.ua:
Problems 1-3 (cart not updating, not clearing, old customer data) — this is 99% a broken AJAX in cart.js or a conflict between the cart module and the theme. Often after updating a module or theme, the JavaScript handler breaks. It can be fixed in 1-2 days.
Problems 4-5 (slow checkout, error at the final step) — we need to look at the server logs and the API response. 8 seconds per step = either heavy database queries or the external API (Nova Poshta) responds slowly without caching. The error when creating an order is most likely due to validation or a conflict with the payment module.
Problem 6 (Nova Poshta lockers) — the Nova Poshta module needs updating or reconfiguration of the API key.
Problems 7-8 (orders without phone numbers, disappearing orders) — critical bug. We need to check form validation + database logs.
Problem 9 (speed) — diagnosis through PageSpeed + server logs, optimization of queries, caching, image compression.
Regarding c4y.ua:
Problem 1 (article 133 instead of the actual product) — bug in the AJAX cart controller, hardcoded or broken product_id in the template.

  • Projects 20
  • Rating 5.0
  • Rating 1 618

Budget: 150 EUR Deadline: 2 days

Hello! 20 years of experience in web development. I have been working with OpenCart since the early versions, any modifications. Details in private message.

  • Projects 6
  • Rating 5.0
  • Rating 1 688

Budget: 150 EUR Deadline: 4 days

Good afternoon!

I have studied both websites — the tasks are clear. Regarding website 1: the issues with the cart and checkout are likely related to AJAX handlers and session caching, and the slow checkout is a typical story with hanging requests to the Nova Poshta API. Loss of orders and auto-filling of previous customer data are session bugs; I will look into it. For website 2: the cart widget with article 133 and broken localization are standard OpenCart configuration issues.

I work with OpenCart + PHP + MySQL. I will fix all the mentioned bugs on both websites.

  • Projects 46
  • Rating 5.0
  • Rating 4 150

Budget: 200 EUR Deadline: 1 day

Hello. I can take on the improvements for both websites on OpenCart. First, I will thoroughly check the cart, sessions, AJAX update of the mini-cart, order processing, and Nova Poshta modules, because from the description, the problem is not in one place, but rather in the connection between the cart, checkout, cache/sessions, and delivery modules.
For hbdeadsea.com.ua, I will fix the cart update without reloading, clear the cart after an order, address the issue with pulling data from the previous client, check the requirement for a phone number, errors at the final step, and the situation where orders may not appear in the admin panel. I will also separately look into why each step of the checkout takes 8 seconds to load and provide specific suggestions for optimization.
For c4y.ua, I will correct the incorrect display of the product and amount in the cart widget, so that the added product is shown instead of the same item. I will also address the Ukrainian localization to ensure that the selected language is actually applied on the site.
In the end, you will receive not just "fixed the button," but a proper diagnosis of the causes, correction of critical errors in the cart/checkout, and a list of what has been done to ensure the site operates more stably in the future. I can start with the check and immediately inform you after the diagnosis about where exactly the problem is and how much time it will take to fix.

  • Projects -
  • Rating -
  • Rating 266

Budget: 150 EUR Deadline: 1 day

Hello!

I have reviewed the issues on hbdeadsea.com.ua and c4y.ua.

I will fix:
• cart and mini-cart bugs
• AJAX and checkout issues
• order placement error
• operation of Nova Poshta parcel lockers
• order loss

  • Projects 51
  • Rating 5.0
  • Rating 3 414

Budget: 400 EUR Deadline: 7 days

Good day, I am ready to create a good, fast store for you, transferring all the information from your old website. This is a better solution than continuing to struggle with the old one. The price is indicated taking into account the work, template + all necessary licensed modules.

  • Projects 86
  • Rating -
  • Rating 752

Budget: 150 EUR Deadline: 5 days

Hello. I am ready to take on fixing the issues on both websites. I have over 10 years of experience. I will address the cart bugs, checkout issues, order loss, localization, and loading speed. I will conduct diagnostics, identify the causes, and fix the problems.

I can start immediately after receiving access.

  • Projects -
  • Rating -
  • Rating 471

Budget: 145 EUR Deadline: 3 days

Hello.

I am ready to review and take on improvements in OpenCart.

First, we need to conduct diagnostics to understand the cause of the errors in the cart/checkout, and after that, carefully fix them so as not to break the order processing.

I am ready to start after receiving access to the admin panel/FTP/hosting.

  • Projects 224
  • Rating 5.0
  • Rating 13 938

Budget: 150 EUR Deadline: 5 days

Hello. I will do it with great pleasure, I know Opencart very well, with over 12 years of experience. I am available 24/7 and respond instantly. Examples of my work => Freelancehunt

  • Projects 4
  • Rating 5.0
  • Rating 512

Budget: 150 EUR Deadline: 5 days

Good day.

I looked at the list of issues - it seems that some errors are related to AJAX/cart sessions, while others are with the checkout process and caching. Especially on hbdeadsea.com.ua, it is clear that there are problems either with storing customer/session data or with conflicts in the checkout modules.

What I can do:
- conduct a full diagnosis of both sites;
- fix the cart functionality and mini-cart updates without reloading;
- address the clearing of the cart after an order;
- eliminate the substitution of previous customers' data;
- find the cause of lost orders and the absence of a mandatory phone number;

  • Projects -
  • Rating -
  • Rating 147

Budget: 150 EUR Deadline: 8 days

Good day!

I have reviewed the issues on both websites. I have experience in fixing WooCommerce bugs, optimizing checkout, cart, AJAX, Nova Poshta, and multilingual functionality.

I can:
• fix the cart and checkout functionality;
• identify the cause of order losses;
• optimize the speed of the websites;
• set up proper localization and Nova Poshta delivery.

  • Projects -
  • Rating -
  • Rating 522

Budget: 150 EUR Deadline: 1 day

Hello! I have commercial experience in developing functionality for OpenCart and in extending or fixing errors in existing OpenCart functionality.

  • Projects -
  • Rating -
  • Rating 289

Budget: 150 EUR Deadline: 5 days

Вітаю, готова виконати правки на Опенкарт

Дизайн сайтів: Figma / Photoshop
Laravel - React Native JS - Vue
Верстка: HTML, CSS, PHP, C#, JavaScript, SQL, Sass/SCSS, LESS.

Телеграм боти - NodeJS
WordPress - Elementor - WooCommerce
OpenCart
Shopify

  • Projects -
  • Rating -
  • Rating 407

Budget: 150 EUR Deadline: 7 days

Hello Bohdan Matveev! I will be glad to collaborate with you. Successful experience in developing web applications on OpenCart and SEO optimization. Portfolio: Freelancehunt The cost and timeline are indicated preliminarily, precisely after familiarization with the admin panel and website templates.

  • Projects 28
  • Rating 5.0
  • Rating 3 598

Budget: 150 EUR Deadline: 5 days

Hello! I am ready to conduct a comprehensive technical audit and fix critical errors in the operation of the cart, checkout, and localization on both sites. The issue of the non-working widget, the retention of old products, and the appearance of foreign data on hbdeadsea.com.ua clearly indicates incorrect server caching, while the replacement of SKU 133 on c4y.ua is related to session failures.

To accurately assess the causes of the 8-second delay at checkout and the integration errors with Nova Poshta, I will need to check the CMS logs and server configuration.

Please message me for discussion!

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