Hello.
To implement this, you would typically need to modify the website's template. Alternatively, you could consider switching to a template that already has this capability built-in.
For instance, some templates are designed to integrate with video hosting services like YouTube and will allow you to embed a video thumbnail directly. When clicked, the video can play in an enlarged product window or an overlay. Example https://marketplace.abantecart.com/templates--skins/lacesta_theme

Hello.
It is known issue fixed in the upcoming 1.4.0 but you can update directly in database
https://forum.abantecart.com/index.php/topic,10572.msg41370.html#msg41370

Hello.
What is your AbanteCart version and store template?

Hello.
Please search in language definitions
https://abantecart.atlassian.net/wiki/spaces/AD/pages/15466660/Language+Definitions

Hello.
For your template, the Go to text should be in /storefront/view/default/javascript/custom.js line 48

Hello,
I wanted to clarify that CAPTCHA and reCAPTCHA are distinct entities. The form does not return any validation errors are you sure that Processing Controller is set as default and core files are not modified?

With the upcoming upgrade to version 1.4.0, there will be significant changes to the checkout process. For existing users who are utilizing the default template and have not yet switched to Fast Checkout, please note the following:

•  Old Checkout Unavailability: After the upgrade, the old checkout system will no longer be available. We are moving towards a more streamlined and efficient checkout experience, and as such, the legacy checkout option will be retired.

•  Theme Switch to Bootstrap 5: If you are currently on the default theme, your store will automatically be upgraded to Bootstrap 5 (bs5). You should clone a default theme to an extension to stay with the old theme look.

Thank you for reaching out. The upcoming new version of AbanteCart will be 1.4.0. This version will indeed support Bootstrap 5 (BS5) as the new default theme and the new Novator template. Additionally, we have switched to fast checkout to streamline the shopping experience.

We have phased out version 1.3.5 in favor of these new advancements. As for the release date of version 1.4.0, we are working to ensure a smooth rollout and will announce the date once it is finalized.