to tf2outpost world peoples and admins

i got my tf2outpost banned forever
after my steam account got hijacked by someone
and i finally found my account back which is this one 'cha cha melon'

one day i click tf2outpost and it says

You have been banned permanently by Garry. The reason for this ban is as follows:
Potentially hijacked - http://www.tf2outpost.com/trade/13935778

and i want to say WHAT did i do??? i did nothing with tf2outpost
maybe the guy who hacked my steam account used my outpost account to hijack someones account?? than that is not fair. if it so, i didnt even know he knows my outpost account.

so guys is there any ways to be unbanned from tf2outpost.com?

i need help guys please

ps.i want to trade without joining stupid minecraft trade server.