Hi,
i got an email today that my account has been automatically suspended!?
Is there any chance to find out why, because i am sure i didnt do anything wrong

Most likely someone sign up with the same ip address or you are using proxy.
Well im sure neither of this happened. i know i am not using a vpn, as i dont need to and its quite impossible someone used my ip for making another account.
So in short words, that account is gone?
No, but in your case we have detected using of proxy, because you have logged two times from this IP address and by iphub.info its proxy IP
https://iphub.info/?ip=87.237.218.161 also according to ipintel.