I looked and this was infact over 4 years ago. It looks like your original ban was for advertising another server on another account, and then you were banned on this account for evading the other account.
Being how long it has been and considering your original offence wasn’t overly bad, I’ll be nice and assume that you’ve changed/actually want to play now rather than advertise another server.
Please make sure to re-read the rules, and then you can be unbanned: