Cannot connect to server due to Username

[J_roen]

Hi, Whenever I try to connect to a server, I get an error saying: "Your username is not allowed. Must be at least 3 character. Only letters, numbers '-' and '_' are allowed."

However, my username is "J_roen" so I'm unsure why I'm getting the error at all
I tried changing my username, but it seems that once created, we cannot change it.

Anyone else having this problem and knows how to fix it?

 

[DukeofRealms]

Make sure you set your username in the menu.