A while back I registered on your server with the username “Percueles”, but then later deleted that character. I tried to register with a new character but it said I already had an account with the user “Percueles”. So I renamed myself to that, logged in and now it completely changed my characters name to that and I just need to change it.
I managed to change my name using a website so I just need to delete that account so I can register a new one.
I think you will need staff help in order to change your account name. You cannot just delete an account I think, and you are only allowed to have one account on the server. In other words, you cannot make a secondary account and relinquish your initially-made account. In conclusion, you probably need to contact an admin who can change your account name permanently.