OpenCart 3.0 — bug fixes + email templates

CMS: OpenCart 3.0.3.7 (ocStore)
Language: Ukrainian / Russian
Domain: https://round.com.ua/ua
Devices: desktop + mobile

List of required changes

1. Email template manager

Description: Install and configure the email template management module in the OpenCart admin panel (HTML/CSS, variables, preview, UA/RU).
Expected result: Admin can edit transactional emails without code changes; emails are sent correctly.

2. Phone in pop-up after registration

Description: In the pop-up form after registration, it is not possible to enter a full phone number.
Expected result: Support for the full international format, correct saving, same behavior as the profile form.

3. Payment text "Payment to account"

Description: An outdated line in the order confirmation contradicts the main message.
Expected result: Consistent text without contradictions on the confirmation page and in the email, correct order status.

4. "Promotions" section missing in desktop version

Description: The "Promotions" page is available in the mobile version of the site but is missing in the desktop navigation.
Expected result: The "Promotions" section is available and easy to navigate in both desktop and mobile versions.

5. "Write to email" button in contact pop-up (desktop)

Description: In the pop-up contact menu, the "Write to email" button does not perform any action in the desktop version.
Expected result: Clicking opens the email client or creates a message form; stable operation in UA/RU.

6. Email validation in subscription block (mobile version)

Description: The email validation error message overlaps the header and text of the subscription section in the mobile version.
Expected result: Error message is displayed below the field, does not overlap other elements, layout is not broken.

7. "Our clients" block in the Russian version of the site

Description: In the RU version of the homepage, client logos and auto-scrolling are missing in the "Наши клиенты" block.
Expected result: Logos and auto-scrolling are displayed and work in the RU version just like in UA.

8. Email link in footer (desktop)

Description: Clicking on the email in the footer opens a blank page (about:blank) instead of the email client.
Expected result: Correct opening of the message creation in the email client via mailto:.

9. Messenger icons in footer (desktop)

Description: Links to Telegram and WhatsApp in the footer open in the same tab.
Expected result: Messengers open in a new tab, the site remains open.

10. Social media icons in footer (desktop)

Description: Links to social networks (Instagram, Facebook) open in the same tab.
Expected result: Social networks open in a new tab (target="_blank" + rel="noopener noreferrer").

11. Display of hryvnia in currency switcher

Description: In the currency list, the hryvnia is displayed as "грн" without the official symbol ₴.
Expected result: Hryvnia is displayed with the symbol ₴, format consistent with other currencies.

Detailed technical specifications with screenshots, acceptance criteria and checklists in the table https://docs.google.com/spreadsheets/d/1lZNDiNfJtauWRiz3Qc8GkXYn42xfJmjf_pLdTEHQ7_c/edit?usp=sharing