Plugin not working on my website, please help!

For some reason this plugin is not working on my website.

I tried testing it on another website and there it works with no problem, it’s only this one that I’m have issue with. I tried disabling every single plugin except this one, installing default twenty twenty two theme, debbug errors with no fault lines, really don’t know where to look for the root of the issue anymore, but this plugin is really important for me and didn’t find any alternative to this one.

I also opened a topic for this issue in another thread so for now detailed info you can check here: https://wordpress.org/support/topic/no-thumbnail-settings-in-edit-image-mode/#post-17352392

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