Twitter sign-in outage

It looks like Twitter have locked us out of their sign-in API until we sign up for some kind of new plan. We’re looking into it now, but if you only have Twitter as a login method, you’ll be stuck for a bit. This will affect a small number of players who still use Twitter as their only sign-in. After we resolve it, it may be a good reminder to add another log-in method, if you only use Twitter.

Twitter sign-in has been restored. We implore everyone to add another sign-in method, please.