You haven't done anything wrong and you're the victim in this case. Your account has been compromised. You need to take yourself off any voting trails and monitor your account to see if it made any upvotes or downvotes that you haven't initiated yourself. If it has, then change your keys. Never put your posting key or any key into any site except for steemit.com that doesn't use Steem Connect or Keychain. I've taken you off the list now and will go through your account to remove any mack-bot downvotes.