This is my Stack Overflow account: https://stackoverflow.com/users/519348/tzhx
Until just now, it was linked to my other Stack Exchange accounts.
I wanted to add Google authentication as an additional, because it had just been based on Steam's openid up to now (well, after myopenid disappeared)
Something's gone wrong though. When I try and log in with that Google account now it says it wants to create a new account, and it seems to have removed Steam auth from that site as well (logging in via Steam also prompts a "confirm and create new account" page)
I've tried in new incognito windows, etc.
I am an idiot. Can anyone help me?