If Google sign in is enabled at your school, then sometimes you might run into the following error:
To fix this issue, allow all third-party cookies for the SmartPass website. Follow the below instructions for your browser.
Watch this video
See the heading titled Enable third-party cookies for specific sites on this article.
If students and teachers are using managed devices through Google Suite for Education, you can manually allow the third-party cookies we need to sign in through Google.
Use the G Suite for Education admin console to find the cookie user OU setting:
Then add accounts.google.com to the allow cookies for URL patterns setting.