Disconnect audio

Bluetooth headphones worked fine until recently. Now, when I join a meeting, I get the select join audio on the lower left. Selections are WiFi or Dial in. When I select WiFi, I get a message "you are using device audio". In addition, when I go to More..., there is a Disconnect audio highlighted in red with a headphone icon with a small x underneath.   I have gone through all the setting and cannot figure out how to have Zoom recognize my headset. I have tried on other devices and I get the same messages, so I know it is my Zoom settings. On other applications, my bluetooth earphones work fine.