I get the dreaded 'No writable calendars are configured for invitations, please check the calendar properties' which of course provide no solution.
TB 78.2.0 (64-bit)
Provider for Google Calendar
January 29, 2021
Yes I have tried the latest TB versions as well - in fact it was the result of some intermediate v78 update that caused this problem!
Ever since some upgrade of the v78.x.y I have been unable to process calendar invites, send or respond to calendar invites. This is a MAJOR problem!!
I have no way of going back to v68 without re-creating a new profile which in my case covers a dozen email account, countless filters, etc.!!
I went back to v78.2.0 because Provider for Google Calendar states that it should work and I'm certain it used to work but since TB upgraded from that version I suspect that something in the profile was changed and now I get the dreaded 'No writable calendars are configured for invitations, please check the calendar properties' for any prior v78.x.y version that I try.
I have un-installed and re-installed the add-on and TB many times already - no joy. I have denied calendar access at Google and then re-authenticated and re-subscribed in TB but - no joy.
Absolutely Nothing about my Google calendars has changed since the 'No writable calendars are configured for invitations, please check the calendar properties' began. the only thing that happened was a TB update. I can confirm that the same problem has also happened on my wife's computer and my laptop.
I am completely stumped about getting my calendar invites and responses to work again and I really need them to work. I would be grateful for any solutions.