Does anyone know which mode the scan is in, and if passive is there anyway to change to active?
Not sure it's in the doc, but until you call BluetoothLowEnergy.setScanState() with SCAN_STATE_SCANNING, it's not scanning. It's easy to see with the NordicThingy52 sample, where there's a menu to turn scanning on/off. When it first starts, it's not scanning.
In this app, I turn on scanning when it first starts, and without that, it never will see anything: