Microphone audio with Metasound does not work as a game controller after packaging/ shipping

Hello, I followed this Youtube video using my computer’s microphone as a controller with Metasound to create my own game for a neuroscience experiment for my college thesis. https://www.youtube.com/watch?v=hek6e_mWudc&ab_channel=TheSoundFXGuy

It works in Unreal Editor but it doesn’t work after packaging/ shipping. The shipped game doesn’t seem to pick up any audio signal from my microphone. I checked my Mac’s sound settings, seems OK.

I also tried to re-package the game with Metasound added to “additional asset directories to cook” in the project settings. No change, or perhaps I wasn’t doing it correctly?

Please help! My thesis supervisor is impatiently waiting…