Names of characters

In the close beta I could pick the name XxxTriplexxX for my self , now(in pre-order bets) it seems cannot pick that name anymore . Hope the names will have a little more room to write something that you like and unique it’s not children game , not sure why I cant use triplex at all …this nickname was from action movie. Hope that the naming will change in the future.
I think other players might have the same problems as do I.
Thank you in advance