Avatar BETA caused camera to stop working

A few days ago I tried out the new Avatar BETA feature. It worked well and I created an avatar for my informal meeting. But when I tried to disable the avatar, the camera showed as if it was disabled, even though it is on and the camera light shows it's capturing. I have reset my Windows camera, restarted, updated camera software and Zoom software - but nothing has worked. Even now when I go into Windows camera settings it shows as enabled, but I get no image. Even the other VC apps doe the same now. Has anyone else experienced this? Please help, I am a teacher and need to be on camera. Thank you.