Trying to use a device with BLE 5.0 operating in notification mode.
GUI-O app reports proper connection but no response from the device.
Debugging the device software shows that no data (@INIT) seem to come from GUI-O.
I am really stuck here as I have no Idea of what GUI-O do to verify proper transmission?
I suppose that "connected" mean that all BLE-negotiations were settled ok?
I also suppose that "Connected device not responding" mean that GUI-O have sent @INIT
without problem and now is expecting at least some setup data coming back. Right?

Any hint how I can further characterize the problem?
/Monolit