In Mail gmail account shows triangle (yield sign) with !
I cannot get mail from a new gmail account in Apple Mail, neither MacOS 11.7.10 nor iOS 16.6.1
In MacOS Mail it shows the warning triangle (yield sign with !). When I click that, it shows a popup that just says "online status" with options to cancel or try again.
On iOS Apple mail, there is no warning sign, but no email is shown either.
I can read the new account using Google web mail or the Gmail iOS app (the account details are fine).
I can read three other gmail accounts in Mail in MacOS and iOS (Google is not 'broken'!).
What do I do next?
MacBook Air 11″, macOS 11.7