Product images not showing in grid layout

Hello Blocksy team,

Yesterday I had a problem with my site and the only solution was to re-start my webshop. I created a backup of my files and database, and when I uploaded them I noticed that the images are missing from the grid layout (not showing). Images are showing on the Quick view and also on the single product page. I am assuming that this is the theme problem because I have tried switching to another theme and everything was fine (all images are displaying – even in the grid layout). I thought about installing a theme without previous customization but I don’t know how to do it because I tried to delete the theme and install it again and I got the previous customization. Also, I noticed that this problem is only in desktop view. The Mobile version is showing images as it should. NOTE: I am using the child theme

Any help?

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