Please use the template provided, for future reference go to the ban appeal section press on the yellow topic at the top of the page that says "Ban Appeal Template" and copy the template provided on the post.
Fill out all of the questions and join the server to see what admin banned you and what reason. Do not lie on the ban appeal or it will decrease your chances of it being accepted.
Name - What is your ingame name?
STEAM-ID - What is your STEAM-ID?
Admins name - Who banned you/who might it be?
Reason - What is/might be the reason that you got banned?
Server - What server did you get banned from?
Time - How long were you banned for?
Story - What happend?
Proof - Any proof on a video/screenshot that clearly show what happened?
Extra information - Any thing you think may be relevant to your ban.