How to restore lost events
important
minical will not delete or change events without permission. If events is not displayed, please check the following settings first.
Is the sync setting set to "All Events"?
There is a possibility that the sync period of events in the setting of iOS is shortened, such as the latest one month ago.
Settings Please check the calendar sync settings of the 
app.
- Open the Settings app
- (For iOS 18 or later) Tap "Apps"
- Tap "Calendar"
- Tap "同步"
- Tap "所有日程"
Reference
If your iCloud Contacts, Calendars, or Reminders won’t sync - Apple Support
Learn what to do if your iCloud Contacts, Calendars, or Reminders aren't appearing on all the devices that you use with iCloud.
Still not working?
Check out the guide below.