Please allow a legacy name reset.
When I started to make mine, there was nothing to tell me what the rules were. Which characters, spaces, caps, etc. I was trying different things and got errors every time. Then all the sudden, BOOM, it accepted something I didn't actually want. No "are you sure you want XYZ legacy name?" or anything, just committed.
Oops sorry you made a typo, you're doomed to look stupid forever. Guess that's nothing new. Now I just hide my legacy name and hope no one asks. LOL
Felix