Hi Brenden,
All I want to do is set Username for my players who came by FB login or Device Login and thats it. So that I can show their name at game End and Leaderboards. I went through all the previous post and it seems to be a dead end. Will it be safe to generate a random email id and password and save it ? Except this i am really not finding any way to display username of player in Leaderboards.