- Go in the extension Options > Admin > Disable online check
- Certain extensions (ie. uBlock), networks, VPNs, anti-virus, malware or cookie cleaners can block urls used to authenticate. Try temporarily disabling them or whitelisting these urls:
https://extensions-auth.uc.r.appspot.com
https://cool-kit-794.appspot.com
https://calendar-extension.appspot.com
https://fcm-74919836968.us-central1.run.app
https://fcm-450788627700.us-central1.run.app
https://firestore-dot-calendar-extension.uc.r.appspot.com
https://firestore-dot-drive-extension.appspot.com
https://firestore-74919836968.us-central1.run.app
