Users can not login with the public service account

Dear Drupal team,

On my website
users get following message whilst trying to login with a Google account:

Could you please propose a solution to that.

I need this working because on my site there is a Role (‘Student’) allowing some users (students of the CERN Accelerator School) to access a certain (feedback) webform and create submissions there. Some people in this e-group do not have CERN accounts and need to login using their Google credentials.

Thank you in advance,

That’s weird. You should open a ticket to the web infrastructure team.