I could scan/detect Beacons, and I could update the configuration without any problem with the nRF Beacons app. The issue is that the configured Beacons are not detected in Beacons mode.
The log message in Xcode is as follows:
2014-11-20 20:30:19.533 nRFBeacons[3375:1063248] didRangeBeacons
2014-11-20 20:30:19.534 nRFBeacons[3375:1063248] No beacon found!
It's weird as I think there should be no connection problem as I can update the configuration of the Beacon. I checked that the Privacy -> Location service is on for the nRF Beacons.
What might be wrong?