Help with black screen

Hi

It may help to close the Activity app and Watch app on your iPhone and restart your devices:

• To close the apps:

  On your iPhone: double-click the Home button, then swipe up on the Activity app and Watch app previews.

• Turn both your iPhone and Apple Watch off, then restart your iPhone first:
  • Restart your iPhone, iPad, or iPod touch - Apple Support
  • Restart your Apple Watch - Apple Support

To learn about the features of third-party apps, including regarding data sharing to the Health and Activity apps, I suggest that you consult the developers' app descriptions and support resources.

For example:

Map My Run:

• App: https://itunes.apple.com/us/app/map-my-run-gps-running-workout/id291890420?mt=8
• Support: http://www.mapmyrun.com/support

Nike+ Run Club:

• App: https://itunes.apple.com/us/app/nike+-run-club/id387771637?mt=8
• Support: https://secure-nikeplus.nike.com/plus/support