For much of the weekend, Google authentication was failing for new users. I believe this problem has been resolved.
If you encountered this problem, please try again. You should not need to send an authentication email. If you still can’t log in, please send email to email@example.com so that we can investigate.
After you log in using google authentication for the first time, please go to user preferences and set your correct email address. You may see an email address that ends in
@gplus.invalid — that’s because Google+ didn’t provide your email addresses for the data import that we did for about 40,000 posts so far, and Discourse requires an email, so we had to “get creative” and some of the consequences have required additional creativity.
Thanks for your patience while we help preserve our path forward from Google+!