I have my players initially login with a unique device ID. But later I want to give them the opportunity to link their account to a email and password for recovery. The Add Username Password request is almost perfect for that, except that it requires a username. Why does it require a username? Is this username supposed to be separate from the players Display Name. I don't want my player base to be confused between their username and display name when they link their account to an email. Should I just put the players Display Name in that spot?
