It has too many bugs and in MacOS it's not worth the trouble, it would have been great if it worked but it crashes every time for the slightest reasons, adjusting the volume it crashes, muting it crashes, activating "audio monitor filter" it crashes, it even crashes when closing OBS, so if you installed it and OBS is crashing believe the probability is that it has everything to do with Audio Monitor. I uninstalled it and OBS stopped crashing.
Asking for help with this is futile nobody will give you a straight answer.
To bad because in MacOS there is no voicemeter app to help control audio