The Bellina Pro’s USB input is based on the MiniDSP “USBStreamer” board.
1) The USBStreamer will function fine on Win10. You simply need to remove the driver signing. There are some steps available here: https://minidsp.com/images/documents/USBStreamer%20Manual.pdf
Please see Page 17 and up to see how to disable driver signing.
After doing this, do the following:
2) Reinstall the Bellina pro driver. Run the setup.exe file. It will first uninstall the previously installed driver, and then reinstall the driver again. Confirm that Bellina driver installed correctly with no errors (you can also check via device manager).
NOTE: During this process you'll have to answer "install anyway" when Windows tells you it doesn't recognize this driver. This happens two or three times.)
3) Make sure Bellina Pro dac is selected as your default audio device.
I hope this helps!