How to change nik name?

[TCK-Diyy]

I created my pro account, but want to change my nik name to another one, is there anyway?

[JuniorDiscart]

There is no way to change your nickname from within the game. If you want to change the name that is displayed in the leaderboards and in multiplayer, you can change your display name in the Steam settings. We use that name as your public profile.
However, if you want to change your username for your Liftoff Pro account, you can send me an email at [e-mail] along with the current username and email address you used to register the account with.