Voice recording for macOS Mojave

Hi,
I have macOS Mojave 10.14.1 and Psychopy3-3.0.0b12.

I would like to add voice recording in my experiment. I checked in this forum an answer for my question and I tried to improve my experiment with the given suggestions but I didn’t fix my problem yet.

I created my experiment with a microphone icone, and it runs correctly.
But: when I listen to the output file .wav, there is no voice recorded.

I checked the microphone and it works. In addition I linked the microphone to psychopy in the settings of my mac.

May you help me?

Thanks!!!