YESSS! Ngan Le's plugin í fantastic!!! And the direct support by him is truly amazing! I had purchased the plugin previously via Etsy, and after a while I realised there was a an issue where if you went from a page to an other the previous gallery would show (not the new one)... Via email he helped me to updated the plugin/code to the latest version via the new website https://beyondspace-showcase.squarespace.com/pinch-zoom-lightbox, and everything now works flawless on iPhone (mobile) & on Desktop!!
Fantastic that there are these kind of developers that fix what Squarespace forgot to implement (quite crazy something like this isn't obvious in Squarespace)...
Thank you Ngan!!!