Some options missing not working after upgrade from 1.5.3 to 1.5.8

Hey, I just finished my upgrade from 1.5.3 to 1.5.8.
Now I noticed that some options are missing.
For example the username/usertitle font.
When I go to edit the items, they don't show up on the list.

When I edit a forum, I can set whether shadowed/colored etc. threads are allowed, but I can't enable these options on the items list, since I can't find them either.

I enabled bump and sticky thread in the items list and also for a forum.
Now when I try to purchase it, there is no option to select which thread I want to bump/sticky.
There is no field to enter an ID or something and when I click "purchase" it tells me something like there is an invalid thread ID.
Seems like I'm not the only one with this problem though --> https://vborg.vbsupport.ru/showthread.php?t=120209

Any idea what could be wrong?

edit:
I'm running vB 3.5.4 if this helps.