BS Node N130 USB to External DAC won't work

I've successfully connected my new Black Ice DAC to the NODE using Coax, and wanted to try the supplied USB cable.

The BS app is seeing the DAC in settings but I'm not getting any sound, with or without the Coax connected. I have tried rebooting the NODE.

I could not find any relevant answers in the BS support forum.

Any assistance would be appreciated. 

Thank you!