Others hearing only right channel

[LVanarsdall]

Hello. I have a student that when Jamming with other students, they are only hearing him in the right channel of their headphones. there is a faint sound into the laft channel, but that may be crosstalk in the Focusrite interface. They are running Windows 10 with the latest updates. They have the latest version of JamKazam. They have a Focusrite 2i2 3rd gen that appears to be set correctly. I have tested the cable and microphone and that is not a problem. I saw nothing in the focusrite software or JamKazam that would cause this. I reinstalled the device. I feel it must be a setting. Can someone tell me what I have missed? Thank you. Lee