Okay, I have now noticed that all Permissions for all membergroups except admins reverted to the most safe permissions possible. If you notice that you don't have access to something you use to let me know here. Every permission has to be redone for all the member groups for each little thing on the forum. This usually isn't a big deal, but I customized a lot of the membergroups very specifically.
I just noticed no regular member can even edit their own posts, this will all have to be looked at in more detail in the morning.