Plugin does not work for me

HI!

So I uploaded your plugin and I enabled the function for preview. But nothing happens on my website.
I have to tell I use Divi, and have a special catalog, which doesn’t have add to cart button but has just the button for the wishlists. Could that be a problem?

I also tried custom CSS for Divi which I found on some site but it doesn’t help.

Thank you for the help and feedback!