Cant Login with Google SSO anymore (Enterprise (company) Plus Account)

I am on Enterprise Plan (Plus Account).
Since Friday (9. Feb) I can’t login anymore.

Bad gateway

The web server reported a bad gateway error.

  • Ray ID: ***
  • Your IP address: ***
  • Error reference number: 502
  • Cloudflare Location: Berlin

I tried:

  • Cleared Browser Cache (deep), Google Chrome, latest Version
  • Changed DNS manually
  • Flushed DNS Cache (MacOS)
  • Tried a VPN (Endpoints in US, UK, Denmark)

nothing works