It may help if you go to the extension's settings and enable user input simulation and install the client app.
Though Google may block your access to the audio challenge regardless of the browser or extensions you use, see more details here: https://github.com/w3c/apa/issues/25
Though Google may block your access to the audio challenge regardless of the browser or extensions you use, see more details here: https://github.com/w3c/apa/issues/25