If you're banned, they found the lewd RP from your account. Either way, PM the GM that banned you or write up an appeal. The worst thing that can happen is it being denied, which is no change at all.
Well that is a very nice phrase, I think being banned for a few months and I have been apologizing quite a bit is possibly enough for a person I was rping who was lewd, is enough punishment, atleast I think so...