Product images disappeared out of nowhere

Hello,

I just checked a website I was working on, and suddenly every product has no image, just some of them, and when I go to the media page of the site, most of the images from my products are gone, but when I go to the uploads folder via FTP, everything is there.

This happened out of nowhere, and I have no clue what happened. Can anyone give me some ideas to troubleshoot/fix this?

Cheers

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