Shift Display Name?

I started up Borderlands 2 and got a message I need to create a shift display name, but no matter what I type in it tells me that there is a internal error setting the display name. I am unable to play the game because of this. What is the way to fix this?

Never seen that before. Can you set it via at all?

It’s fixed! Thanks anyway.

How did you manage to resolve the issue?