Audacity recording channel 1 on both channels.

Hi. I use a Behringer UMC204HD interface on Windows 10. The problem is Audacity is reading channel 1 signal on both L and R channels, and no signal on channel 2. I’ve been searching for a solution for a while and can’t find it. Can anyone help me? Thanks

Look in the Windows Sound control panel. The device is probably set to “mono” and needs to be set to “stereo”.

Thanks for the reply, steve.
It is indeed in mono, but aparently there is no way to change it to stereo. Any idea why?

I use this same interface in other computer (older ones btw) and it works fine.