Unfortunately, due to the recent errors caused by two extensions, we had to remove them from all FreeFlarum forums. Namely, the "Categories" & "Discussion Templates" extensions were removed. I'm sorry to see them go, but there was no other option but to delete them, as they were causing many errors across all of the forums.
In case these errors will be fixed, these extensions will probably make a return.
Small warning for all forum users/admins that we might remove even more extensions when beta.14 comes out. This update will drastically change how the Flarum API works, and therefore some extensions might stop working. And if they won't be updated, we sadly can't keep them. Also because of this, the beta.14 updates for FreeFlarum might be delayed until most (if not all) extensions will be made compatible.
Note: In case that your forum is still bugged, please tell us your FreeFlarum hostname and we will clear the cache for you (extensions get cached, and with them the errors are too).