I only use this mixer as a stand alone. It used to allow audio from the multiple channel live band inputs to pass through to the main and aux outputs.
The audio levels use to show on the meters but now shows no activity. I'm able to control the various fader level inputs remotely.
to this device via a laptop PC running Windows 10 through the USB port directly. Audio from previous recorded music sessions using the Capture 3 app. does work. I have updated the firmware and app 18.104.22.168348 as of July 18,2020. It still didn't help.