error on the OpenCart page 2.2.0.0

Change the existing exchange rules between UT10 - UT11.5 for transferring Order and Implementation version 10 is unclear (updated in parts) UT 11.5 is the latest long-term support 11.5.27.58 cf UT 10 - https://disk.yandex.ru/d/UmV6HCvZuYLr-Q current rules - https://disk.yandex.ru/i/wfgWPYZT6Cm0RA

I need a program that will send messages to our database of clients' phone numbers (or emails). With its own proxy. It can be Viber, or Telegram, or email. The program needs to be installed on my computer. (I am waiting for your offers regarding the price.)

It is necessary to implement a full cookie consent management mechanism (Cookie Consent) on the OpenCart (3 pcs) websites and configure Google Consent Mode v2. Requirements: install and configure a CMP (Cookie Management Platform) or another solution for managing user consents; implement a full Cookie Consent banner with options to accept, reject, and configure cookie categories; set up Google Consent Mode v2 through Google Tag Manager; ensure correct transmission of consent statuses to Google Analytics 4, Google Ads, and other marketing services; configure the operation of analytical and advertising tags so that they only trigger according to the user permissions obtained. Currently, the cookie banner is only informational and does not manage consents, nor does it transmit their status to Google services. A complete setup is required in accordance with the current GDPR and Google Consent Mode v2 requirements.

Development of a Telegram Mini App (store) with CRM and Nova Poshta integration It is necessary to develop a Telegram Mini App (store inside Telegram).Main functionality A catalog with approximately 20 products is needed. For each product: photo; name; description; price; model selection; color selection; quantity. Order processing The client must have the ability to: view the catalog; add products to the cart; change the quantity; place an order; enter: name; phone; city; Nova Poshta branch number; payment method; order comment. CRM All orders need to be automatically transmitted to the CRM via API. It is preferable that the integration is universal and in the future, the CRM can be changed without a complete redesign of the project.Nova Poshta Integration with the Nova Poshta API is needed or data transfer to the CRM if the creation of the shipping document will be done by the CRM itself.Administrator A simple administrator mode is needed: adding and editing products; changing prices; changing stock levels; adding new colors or models. Important The project must work as a Telegram Mini App (not a regular bot with buttons). The code, database, and all access after the completion of work must belong to me. The architecture must allow for additional features to be connected in the future without a complete redesign. Please inform: Estimated cost. Completion time. What technology stack you plan to use. Do you have experience in developing Telegram Mini Apps and integrating with CRM and Nova Poshta API.

A Telegram bot needs to be developed in Stand Pulse for the client's test. The test has 5-7 questions with 5-7 answer options. Based on the client's answers, the bot will calculate scores and provide a result (6 options).