How to change nick in scrap mechanic (Scrap Mechanic)

You bought the game the incentive? If not, then no way. If bought, then change nickname to the incentive.

If you bought the game on Steam, then you can change your nickname in it. If you have a Pirate, go to the game folder, then to the release folder, and there will be a settings folder, there is an account_name file in it, and you can save a new nickname in it