Rated 2 out of 5 stars

by mk16843 on Oct. 30, 2020 · permalink

Radoslav Krehlik is correct - this does NOT work if you install from the add-on directly within Thunderbird at the moment.

Download and install, restart Thunderbird and it works.

I had to remove my calendars and re-import them.

Not great, but at least it's a work-around