I added the Google Calendar with writing and read access using the Provider for Google Calendar add-on (https://addons.thunderbird.net/en-us/thunderbird/addon/provider-for-google-calendar/ by following the instruction here https://support.mozilla.org/en-US/kb/using-lightning-google-calendar. I can see the calendar and edit it, but when I receive an email with a calendar event I get a warning saying something like that " you do not have Calendar that has writing enabled", and I have no way to add the event to Google Calendar. Now by mistake I clicked on "hide this warnings in the future" so the warning is not there anymore. Therefore 2 questions: 1) How can I make sure I can add events I receive by email to my Google calendar? 2) How can I re-instate those warning so I can give you the right warning and I see them in the future? Thank you a lot Best