I haven’t changed anything, and neither did my webhost. All files are still where they should be. I have upgraded WordPress to the latest version and uploaded my theme again. Still doesn’t work, although when I switch to another theme it works! It has to be something with the theme, but I don’t understand why it worked before and doesn’t anymore, while nothing has changed.
I don’t have that much comments, and most are very short, so it’s not hard to see in the tables. Also, I’m the only author and nobody besides me has access to the control panel. I have also checked the comments settings and I don’t think that’s the problem.