Yes, our v0.1 accounts system is a bit of the simple side so we're working on making it more useful for people. None of the changes have rolled out yet, so these difficulties with changing the username are "normal" — but not what we want long term!
The temporary workaround should be simple: try logging out and logging back in again:
- Click your avatar in the top right of this screen and choose the "Log Out" link at the bottom of the drop-down menu.
- Then go to http://my.uxmastery.com to log in again.
- Your username 'dbraydndegraw' (which is already set in your UX Mastery account) should then sync across to the forum software.