Hi there! I see you're encountering the BLE_UNAUTHORISED error in the Shining Mask app. That typically relates to Bluetooth Low Energy (BLE) permissions or authorization issues between your device and the app.

To help you better, can I ask a couple of quick questions?
1. Is your Windows device’s Bluetooth turned on and paired properly with the mask or accessory?
2. Have you granted all Bluetooth-related permissions to the Shining Mask app?
3. Are you using the latest version of the app?

While you check that, here are some steps we can try:

1. Check Bluetooth status
- Go to Settings > Devices > Bluetooth & other devices. Make sure Bluetooth is turned on.
- See if the mask or related device shows as paired or connected.

2. Restart Bluetooth services
- Turn Bluetooth off and back on.
- You can also restart your PC to refresh connections.

3. App permissions
- Open Windows Settings > Privacy > Bluetooth.
- Ensure that the Shining Mask app has permission to use Bluetooth.

4. Re-pair the device
- Remove the mask device from paired devices.
- Then try pairing it again through Windows Bluetooth settings.

5. Update the app
- Check the Microsoft Store or relevant source for the latest app version and update if needed.

If after these steps you're still seeing the BLE_UNAUTHORISED error, let me know what you tried, and we can look deeper into possible causes or fixes.

Does this help so far?