I was temp banned a long time ago and dont know why!

Well A long time ago I went on vacation and then i came back and my account natin1 was tempbanned, at first i just gave up because i figured my account got hacked or somthing then as i was forum trolling (didn't feel like making a new account) i found that it said my account was temp banned. I want to know why my account was temp banned and if i could please get it removed.

thank you