TorkilsMicMuter toggles the mute state for the default microphone in Windows.
If you have multiple microphones (e.g. one in your headset and one in your webcam), and TorkilsMicMuter does not work correctly, then check that the microphone that you use is the default microphone. You may also consider disabling the microphone(s), you are not using.
You can also inspect the mute status of each of your microphones by
In order for TorkilsMicMuter to work best with Microsoft Teams, you should enable the microphone in Teams and then use TorkilsMicMuter to control the mute state. Microsoft Teams will react on this and thus show your current mute state correctly, so it is also visible for other participants.
For Cisco Webex, use the same approach as the one described above for Microsoft Teams.