Had this numerous times: someone planned a meet in my calendar without getting a notice somewhere (preferrable by mail) that this happened. Result: getting of meeting notice 10 min before, without me even knowing it was planned. Must be some setting to change this?
How to get a notice by gmail if someone plans a meeting in my Google Calendar?
google;google calendar
If you haven't done this, you can add/edit notifications in Calendar settings. The default is a popup notification 10 min. before the event so I suspect you haven't edited this.Go to Google Calendar.Click the Settings gear at top right.Choose Settings in the dropdown.Click the Calendars tab (top left).Look at your list of Calendars. On the right you can edit notifications for each calendar.In here you can Add/edit a notification, choose to get an email or sms when someone invites you to an event, receive a daily agenda etc.