Why does every csgo server kick me off and ask me to change my name?

[FlapJakk 0 / 2,117]

I keep trying to join csgo servers but the system keeps booting me and asking that I change my username. I tried changing my name once and it didn't fix the problem.

 

Does anyone know a solution?

[VilhjalmrF 2,099 / 30,684]

Can you send a screenshot of the message when you get booted?