Charlie is no, longer active on this forum. The SC rep is
@Stella_SC.
As to your ban, have you contacted SC support? This should always be your first action.
If you did not have an under-age person on screen then presumably they have banned you for the second part of the reason in your screenshot: Talking inappropriately about an under-age person. Do not ever mention anything vaguely sexual in reference to any thing under-age. So do not talk about when you first had sex, or performed oral sex etc if it was when you were under the legal age.
If a user ever asks such questions, either tell them it was an age when you were over the age of consent. Or just shut them down. It's not really appropriate conversation anyway. Anyone asking such questions is usually looking for free titillation and to get their jollies without tipping you.