I've looked in every seemingly related post, nothing helped me out there. The FAQ doesn't cover it. I do have installed ULX, ULib, Uclip and Simple Prop Protection. I can do certain admin-things, like cleanup, kicking, changing server cvars, but it stops there. Everybody can noclip through all the stuff. Me being admin should be able to noclip through world, but no. I can't pick up or manipulate other players or their props. Settings are default, Prop Protection is on, etc..
ASSMod is installed, but this shouldn't be causing the problem. I've used them all together before without any big trouble. I did the same then like I did now: Installed the addons, edited the users.txt, restarted the server (more than once). I would guess that editing any file is not the answer, since I've never had to do it before. Or..?