Behringer UMC404HD

Hi. I have a new Behringer UMC404HD and problems. I only can record on Channel 1, mi Signal from channel 2 or 3.

I understand that I need a specific driver. Which one do I Need? Ehrte do I get the Driver?

Thx

I have one of those too. Your wisest move would be to use a proper DAW instead of Audacity to do what you are trying to do. Perhaps have a look at Tracktion Waveform Free or Reaper. There are others too, of course.