Sound loss when playing flute

I take flute lesson over Zoom.  When talking, it is fine, but when I am playing the flute, my teacher hears no sound on his end.   I have checked the Professional Audio.  I even tested it with other external devices.  It works outside of Zoom, but not in Zoom.  I thought Zoom is filtering out the flute sound as noises and tried to suppress different levels of the background sound and nothing worked.   I am on a HP ENVY All-in-One Desktop with a HP-ENVY USB Webcam.  Windows 11.