If you will check your old thread created last year here:
Unban this account, I think this is somehow an appeal, and on the third post there by @rhomelmabini, he/she provided the reason why you got banned and it was plagiarism.
I am curious, you appeal to unban your account before but your account still active a few hours ago, so you got unban then banned again now? If so, then the reason could be still what @rhomelmabini in your previous thread, which is plagiarism.
EDIT: TryNinja found it already. Thanks!
@OP, if ever you don't what Ban Evasion is, you may check this
25. Ban evasion (using or creating accounts while one of your accounts is banned) is not allowed.[e]