Audacity only recording to one side

I’m using Windows 10 and Audacity 2.1.2. When I record in stereo, audacity only records on the right side. Can somebody help me t fix this?

What are you recording and how? A mono microphone will sometimes do that, but almost always to the left not the right.

Koz

It’s my podcast. Everything was working fine, now it doesn’t.
I use a mackie mixer and plug an audio-technica atr 2100 in. I have the main out going to my pc speaker jack, line in 7-8 going to my pc headphone jack, headphones plugged into the phones jack on the mixer.
I call people through Google Voice.