I think that he has a vip system that add [VIP] infront of the nickname when player gets vip, and then other people are able to create a character with the same name as that player.Please speak english
i think that the problem is the opposite, (Player1 gets vip, turns into "[VIP] Player1" random guy creates "Player1". But it'll be really hard to do something about, and account manager is always source edit.Then just add VIP, [VIP] in banned words in Znote AAC in Config.php.
Dunno how to do it in Account Manager in-game tho.