If you were having trouble changing your Username, try again now. I had a permission set to "Off" that I wasn't aware of.
You should now be able to change your Username, but remember to confirm your password (last input field) before clicking SUBMIT. You need to confirm your password whenever you make Account Settings changes.
You should now be able to change your Username, but remember to confirm your password (last input field) before clicking SUBMIT. You need to confirm your password whenever you make Account Settings changes.