Defender Game Expert BT1 + bluetooth + win10 + more bluetooth + headphones

So there is a Defender Game Expert BT1 joystick and a bluetooth dongle for it. I connected the pad via a wire via ScpToolkit, everything works great. I click "install bluetooth driver", the installation proceeds without incidents and the dongle becomes invisible to the system. Only ... When I disconnect the pad from USB and press the button, an inscription appears that the pad is found and nothing happens.
The indication on the pad simply goes out and naturally it does not work.
How to be?
The situation is further complicated by the fact that my headphones are also connected via bluetooth. Naturally to another dongle, but I don't know if this can interfere with the gamepad ...