Have you tried this yet?
In Notifications preferences, select the app on the left, then choose None for the app alert style on the right.
Also check Sys Prefs>iCloud & uncheck Calendars & mybe Reminders.
Have you tried this yet?
In Notifications preferences, select the app on the left, then choose None for the app alert style on the right.
Also check Sys Prefs>iCloud & uncheck Calendars & mybe Reminders.
Can't get rid of calendar notifications