I used to play on Pogo a lot, but now school has pretty much gotten in the way of that. That's really strange that they would just ban your account. If you haven't said anything vulgar to anyone or about anything, then the only reason I can see for them banning you is if you edited your profile and whether by accident or for real, you said that you were under 13 in your profile. I don't think they'll let you keep playing if you say that you're under 13, it's in their policy I think. Don't kill me if you're like 18+ or anything, I'm just saying that because I don't see your age in your profile. It also could be your name, but I don't know. It's a hair on the edgy side
. Probably, someone in one of the rooms with you noticed your name and reported you, if it was your name; that's why it took so long.
My best advice to you is just to start a new account
. They won't notice, nor will they care. They have millions and millions of accounts there.