Microphone doesn't respond in Google App

Device: Ipad Air 2

Software ver: 15.8

When I tap the microphone icon in the search bar, a screen pops up that says Speak now and there are the four color dots. When I speak into the microphone, the dots respond, so I know the microphone is working, however, Google does not respond.

The problem seems localized to the Google app, as if I open Safari and do the same thing, my voice is transcribed into the search bar.

I've checked every control that I can think of but don't know why Google isn't responding when I speak. Any ideas???