Hello,
You might want to file a ticket on Submit a ticket : Pimax Support
At the same time, you may try the following:
- Delete all Pitool/Piservice files on the driver.
- Unplug the headset and reinstall the Pitool 280v (recommended)
- Launch the Pitool and connect your 8KX (USB and DP)
- Wait up to 10seconds.
Regards.