I programmed my beacons with ble_app_beacon (nordic firmware). android can locate my beacons without any problems. I installed nrf connect app, it can find them too. but when I use nrf nrf beacons app , I click on add other beacons, I enter uuid major and minor, but as soon as I press save application says: beacon not found. what is going on? why cant I located my beacons with nrf beacons?