I added two Google accounts to my online accounts in Gnome and allowed syncing of the calendar. This works just fine for the default Gnome shell calendar, initially. All in all I have about 10 different calendars in those accounts.
I recently noticed some of the changes to my events were not showing up either in Fedora or on another device that connects to the same accounts. I tried syncing, restarting the desktop session and even a full restart, to no avail. Then I looked into the system logs and found countless messages like this one:
source_credentials_required_cb: Failed to authenticate ‘’: Daily Limit Exceeded. The quota will be reset at midnight Pacific Time (PT). You may monitor your quota usage and adjust limits in the API Console: https://console.developers.google.com/apis/api/caldav.googleapis.com/quotas?project=44438659992
This happens for all of my calendars, apparently from the logs. It also suggests that it will resolve the syncing issues eventually, but this is obviously not the expected behaviour
Is this an issue with the app itself? The link provided does not allow public access.