Xhorse VVDI Key Tool Plus Cannot Find Any Bluetooth Equipments?

Xhorse vvdi key tool plus Bluetooth does not find any equipment.
Can not properly connect. I try to connect from settings window, but still no luck.

Vvdi Key Tool Plus Connect Bluetooth

Key tool plus only connects with xhorse condor/dolphin key cutting machine via Bluetooth. It cannot connect mini prog/key tool max via Bluetooth.

Make sure turn on condor/dolphin machine.