My Microphone is not working / permission issues

When you open Tandem first time, you’ll be prompted to give permissions to you Microphone. If you denied you'll have to go through System Preferences

Open System Preferences, then click on Security & Privacy, then click on the "Privacy" Tab.

There, make sure Tandem is checked.

I can't find Tandem in Microphone tab

Quit Tandem

Open app the Terminal app. To do that, you can go to your Applications folder, or use Spotlight and search for Terminal.

Then, paste the following -> tccutil reset microphone

Press enter to run the command

Open Tandem again