Hi Tigon,
You're unbanned. The demo is fine and even without it, we've known you long enough to know you don't cheat. You don't need to worry about the reason. The member
who banned you always bans people
who kill him and he doesn't bother to check if there are really hacks or not. We'll deal with him internally and I don't think you'll get any answer from him here.
I don't think it'll happen again. Nonetheless, if you can, /record each map you play on our server and come here to post if anything wrong happens. To get a quicker answer, I guess you could get on our discord (
https://discord.gg/6yFPcR7), there are always members over there
who will be happy to help you out.
Regards,
Florian.