When I started posting I was in a career where keeping moderate anonymity seemed sensible. Now it makes more sense to use something closer to my real name (though conceivably I'll want to change back in future).
As far as I can see in user settings, there's no name change option?
Hi there - it looks like you were affected by our bug, but I think I was able to fix your account so that you can change your username now. If that doesn't work please contact us and we can update your username for you.