Hi,
Same issue, I thought the site was ok until the client tells me he couldn’t view the gallery… and yet I can view it on my own browser, strange. I tried checking on chrome mobile and I can see that the gallery doesn’t load from there. From the desktop I can see no errors from the console. I can’t inspect my phone though, it has no debugging tool. I have sent the url to the email address you posted
The only extra plugin was polylang and html5lightbox, I tried disabling them temporarily and I still get the same issue