Q: Calendars sync, but events don't show on watch face

Hi

If you have not yet done so, it may help to update your iPhone and Apple Watch to the latest software.

watchOS 2.1 resolves an issue that could prevent events from updating in the Calendar complication.

Instructions for updating the software are available here:

Update the iOS software on your iPhone, iPad, or iPod touch - Apple Support

Update the software on your Apple Watch - Apple Support

It may otherwise help to unpair and re-pair your watch. The Watch app on your iPhone takes watch backups automatically, including a fresh one when unpairing via the app. Choose to restore the watch (Restore from Backup) when offered the option during set up. Most data and settings will be restored, with some exceptions (eg Apple Pay cards, passcode).

Unpair your Apple Watch and iPhone - Apple Support

Set up your Apple Watch - Apple Support

No - neither updating your software (for Apple Watch and/or iPhone) nor unpairing and re-pairing your watch will affect your activity history or badges.

You may wish to make an encrypted backup of your iPhone beforehand, for peace of mind:

https://www.apple.com/support/iphone/backup/

This is what worked for my setup that substitutes the iOS Calendar with BusyCal. I need to turn off notifications for the iOS Calendar in order to avoid notification duplication from the 2 calendar apps.

In the iPhone Settings/Notifications/Calendar turn off the switch. Go to Apple Watch app/Notifications/Calendar, check 'Mirror my iPhone' instead of Custom. The Watch no longer gets the 'No more events' display. It seems like one of the items in the customs settings, when deactivated, creates the 'No more events' problem. Unfortunately, I haven't had time to do further troubleshooting. Hopefully someone will find the time to identify the culprit.

These settings turn off the Calendars notifications yet they let the data reach the watch complication so that the calendar event is displayed in the watch face. If you turn off all Alerts using the Custom option and turn off then on the Watch you'll get 'No more events', you switch it back to mirror and the 'No more events' is replaced by the appropriate information. Hope this helps someone.