I am having difficulty with syncing my Google and Thunderbird calendars. Thunderbird V141.0 My requirements are quite simple: I want to create new events in the Home calendar and have them synchronize with my Google calendars. I do not need to do it the other way, I just want to be able to see the Thunderbird events on my Google devices. I have installed the 'Provider for Google Calendar' add-on and then successfully subscribed to my Google calendars. However, when I add a new event to the Home calendar, it doesn't appear in the Google calendar. I am clearly doing something wrong, so I wonder if someone can help. Martin