Proximity with Multiple Beacons template not working after restart app

BLE Beacons
1
  1. I’ve created an app with Proximity with Multiple Beacons and downloaded it
  2. When I first run the demo with XCode it is working and showing 3 beacons in range.
  3. I stopped the demo app from XCode.
  4. When I try to rerun the demo app from ios device or from XCode debugger, there is always “no beacons around” text on the display. None of the ProximityManagerDelegate methods are triggered although the beacons are in range. I also try to exit and enter the region but nothing happens.
  5. I have to remove the app from phone and reinstall the app from XCode to make it run correctly again.