Migrate from “Cart Functionality”

Hello, I need a suggestion. In the future I may need to migrate a e-commerce website made without any known e-commerce platform to Woocommerce (see link of the analysis made with builtwith.com, it just says “Cart Functionality”) . All I can see is that it is developed in php and probably is homemade. Do you think will be compatible using your plugin? I have not possiblity right now to access the website, since I just making a quotation of remaking the website. Thank you for your suggestions!

The page I need help with: [log in to see the link]