Please help me to fix this bluetooth scan for "service" problem.

[Anonymous_Banned275]

The purpose of this REPOST is to help me to FIX this issue.
I have a working code which correctly identifies remote Bluetooth device service for devices identified as "Boom boxes".

It fails to do same for Raspberry PI Bluetooth and another Bluetooth device.
All my devices are "found" by scanning for nearby Bluetooth devices.

I am using
discoveryAgent = new QBluetoothServiceDiscoveryAgent(adapterAddress);

And it generates SIGNALS when working correctly.
When it fails it generates only "finished" SIGNAL and throws this error:

qt.bluetooth.bluez: No uuids found for "98:D3:31:F8:39:33"

I am open to suggestion what else I can code (in Qt) to narrow it down and identify why only certain addresses are failing.