How to change my username?

Hello, I want to change my username to zerogravitee but i don't know how :(

Hi,

We do not actually allow users to change their usernames themselves.  However, we can do it for you.  The username was indeed available so I went ahead and made the change.  Your username is now "zerogravitee ".  Let us know if you have any further questions and we will be happy to help.