Do you rely heavily on Googles Gmail email system?
If you do and have had odd glitches recently like…. I can’t login then you are not alone.
It’s nothing you are doing, they were having authentication issues yesterday.
“Description: The issue with authentication to Google App Engine sites, Google Cloud Console, Identity Aware Proxy, and Google OAuth 2.0 endpoints should be resolved for the majority of customers and we expect a full resolution in the near future. We will provide another status update by Monday, 2019-08-19 13:30 US/Pacific with current details.
Workaround: Some customers have reported success attempting to utilize an incognito window under the Chrome browser to login.” – Google
Yes, even the big guys have major issues.