All you were doing was spamming bounty campaigns and writing short low quality posts about altcoins. Forum is full of people like you and many of them get banned sooner or later. I doubt that you will get it unbanned. Better start working on a new one. Anyway, if you really want to waste precious time of our mods start a thread in meta and ask what was the reason for the ban. The answer should give a probability of your appeal being a success.