The QMX+ is a great rig, but several people had issues with it being recognised with Windows 10. This sequence worked for me:
Do NOT connect the USB lead and do NOT have WSJT-X running!
- Start QMX+
- Start PC
- Connect USB lead
- Start WSJT-X.
Although I cannot guarantee this, it worked for me. Also, I adjusted the audio levels from the default 54 to 99 on the higher bands.
Doing this, it has been faultless and great.