Review for Provider for Google Calendar by Axel Ringwald
Rated 3 out of 5 stars
After updating lightning to Version 68.2.2 all calendars are now visible.
Unfortunately still I can't see any dates.
If I create a new date in TB-calendar the date isn't visible in TB, but the new date is recorded in google calendar.
To create your own collections, you must have a Mozilla Add-ons account.