Zoom for musicians -can't hear piano

[Bdoni]

I am a musician. I have a macbook M1 and I use an audio interface

During meetings  - I have a microphone plugged into my audio interface and a digital piano.

The other participants can hear my voice really well but NOT my piano.

I have 2 inputs and whether the piano is plugged into 1 or 2 - others can't hear

But the microphone always works

Can't anyone help me ?

Thank you

Bruno

[danielsru]

Same here but the other way around. I teach classical guitar. Students can hear me playing and talking but on some meetings I can hear they speaking but NOT their guitars. They sound choppy (compression issue?). I tried ALL sound available options on their computers but still bad. 

Zoom support not very helpful. I have a paid account