Account names used to be changeable but that changed a few years ago. Servers are now supposed to use community names or nicknames when displaying player information(like in a high score list or announcement).


You can change your commmunity name at the website, but choose wisely as you can only change it once. Also your nick can be changed at any time using the setnick command at any time as long as the server has it enabled and you're not in an area or event where it's disabled.