Calendar losing events
Calendar is failing spectacularly. I add an event and less than 12h later it is gone. No sign of it ever having been there. At first I thought it was a failure to sync between events sourced from emails (gmail) but it's also happening with events I add manually. It also seems to be getting worse, although this is a subjective assessment...
Pesky events like flights and business meetings vanish. I've looked to see if I can "rebuild" my calendars (as per other Apple software) but haven't found anything online. I can't afford to delete calendars and start over - these are critical for my work and in particular, work history - when/where I've had meetings with clients etc.
Would greatly appreciate any insights, and ideally, solutions to this issue. I'd prefer to stick with Calendar, but the way things are looking, the big G may end up my default application.
Thanks
E
MacBook Air 13″, macOS 10.15