Greetings!
As a professional designer & developer I will definitely fix your " Add to cart " button issue that you mentioned in attachment file.
Please initiate a chat with me and share Login details.
I am proficient in (Designing & Development). My strongly grip CMS development (WordPress, Shopify, Big Commerce, Wix, Webley, Magneto, Squarespace, Joomla, AJAX, etc.). and further, My having commands on PHP(Laraval), Node JS, Next JS, JavaScript, Angular, Html CSS, UI | UX design, front and backend development | SEO standards etc.
Thanks