More issues with GMail

All of a sudden our mailing lists stop showing up on our website. I check Postie, and run a test, in the log it says “Invalid credentials (Failure)”. I log in to the GMail account with the same credentials that are setup (and previously working in postie) and have no issues getting in. Credentials are correct. I check to dredded ‘Less secure app access’ and notice it was turned off… AGAIN!!! I turn it back on but Postie still won’t connect. All the other settings are correct, and haven’t changed since it was working just fine a few weeks ago. To say I’m frustrated is an understatement!