Rated 4 out of 5 stars

Hello. I have been using this add-on for a while with success but as of a few days ago I haven been unable to send or receive events. Maybe it's similar to q149409mvrht. I live in a country where I need to use a VPN to access Google so thought it was that but I can log in to Gmail in my browser no problem (with VPN on.
The "sign in to your account" pop-up opens when I start Thunderbird (doesn't normally). If I log in to Gmail there it makes no difference. If I close that pop-up all my existing events in Lightning become invisible.
Hoping for a fix soon :-)

*UPDATE!*
I used the workaround mentioned in:
Workaround to TB Update 52.0.1 Rated 5 out of 5 stars
by Nighthawk on April 27, 2017 · permalink
IT WORKED! THANK YOU

This review is for a previous version of the add-on (3.3).