Plugin breaking lightbox on Genesis-themed sites

I added a comment to this post: https://www.ads-software.com/support/topic/plugin-breaking-lightbox-on-showcase-pro/, but no-one has responded. I have the same issue with two Genesis sites. Broken on products of this site, example: https://clearwatersports.com/product/mountain-khakis-saloon-flannel-shirt-mens/ (modified child theme Gallery Pro). Not only does it not show the lightbox, it misses displaying the first image in the thumbnails. This happened a half year ago at least. I saw the same problem in a second site and realized it was due to Genesis Connect for Woo. It breaks the thumbnail hover and lightbox in this site, too, but I couldn’t live with that so I deactivated it: https://www.johnnycakeflats.com/product/adult-apron/ (modified child theme Hello Pro).

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