finally it was a hardware problem of this BED - BLE Dongle.
Had to made a hard reset and now the popup to pair the device comes up
on Android and iOS devices - so Qt works as expected :)
BTW: the possibility to make a hard reset of course was not mentioned in
the BLE Dongle docs.
so I can conf
Qt 5.15.7
did many Qt apps for BT LE (for Barcode Scanners) with custom services /
characteristic.
all works well
Now a project to control Beds with some motors for slatted frame (Lattoflex)
This BT LE device must be paired/bonded (just works)
The device was found from BLE device discovering,
