Admin commands not workingSolved

Hey everyone and merry Christmas!
Today a new issue popped up. That is admins not being able to use any commands ingame. I'm talking about vanilla commands like "inventory.giveto" or every "spawn" command. We cannot give ourselves items from the F1 - items tab either.
The funny thing is that commands like noclip or godmode still work - and every command from every plugin we use, like Vanish or Admin Radar.
I checked the users.cfg, wich still incluedes every name and ID it is supposed to do and a restart of the server did not work either.
Yesterday everything worked just fine, it just started today for some reason.

If anyone can help, that'd be great!

EDIT: Teleport commands like "teleport2marker" or teleporting to other players don't work either.

Merged post

Problem solved itself. Somehow.

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