Audio not working when hosting (Zoom Pro)

Suddenly, my mic is not working when I host.  I can hear the other person, but they cannot hear me.

I am careful that the mic icon in the lower left is not turned off.

One suggestion states I should go to my icon picture in the upper right and pull down the "Settings" - but I do not have that option.

I have turned off, unplugged, and re-plugged my computer, that does not solve the problem.

Other ideas?

Thanks