There’s a chance that if you’ve ever played on another players account who was blacklisted or connected by IP to a blacklist, you will be blacklisted in relation to that account. I know someone (I’ll call him Player A) who was blacklisted in relation to Player B because player C played on Player A’s account as well as Player B, and Player B was guilty of chargeback, resulting in blacklists for all 3 players. Hope that wasn’t too confusing lol. As stated above, your best bet is to file and appeal