BIG PROBLEM please help me

**Hello, I am on garry mod and I have a problem for some time, well, I do not know has what I touched but, it superadmin, it is impossible to me to delete things of the other players, to take vehicles, to take the props of the players, and when I modify my rank, it marks me: You’re not allowed to assign privileges that you don’t have yourself

Thank you for helping me as quickly as possible if he see pleases with a maximum of detail (I am a founder of the server)**

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