Thread:Mira Laime/@comment-39577701-20190525002507/@comment-26339491-20190528192019

Our system doesn't allow username changes that create a username too similar to an existing one. That's to prevent impersonation, accidental or otherwise. It unfortunately doesn't distinguish between someone else trying to impersonate you, and you yourself trying to adjust your username. It just sees "hey, here is someone trying to change to a username that looks too similar to one we already have" and gives you an error.

Even staff can't cirumnavigate that at the moment, due to a bug. Sorry!