@peeld and @catloki,
In 99% cases this is a simple cache issue.
Please update wpDiscuz to latest version, then delete all caches, purge CDN( if you have), reset optimizer/minifyer and other performance booster plugins. Then navigate to some post on front-end and press Ctrl+F5 to rest browser cache.
After this manipulation if you see any problem please leave that page URL to allow us debug it. Also let me know what was your previous wpDiscuz version.
Confusion with the names of commentators. Back 5.2.2
@catloki, I see you’ve just registered in www.remarpro.com forum and this is your first post. So I guess it’s very important for you to fix the problem. However your post is to short and says nothing to understand and provide some help. Please explain more what do you mean and leave some screenshot or URL to allow us see the problem. Just be informative to get the best support.
P.S. Please keep discussion with support team in order to fix update problems. Rolling back to old versions is the worst solution.