Allow App Microphone Access

Hello, internet. I'm using a MacBook Pro 2016 13" w/ Touch Bar, running the latest version of Mojave Beta (10.14). I did not have this program before updating, everything worked fine in High Sierra.

I've been trying to allow an application (Nvidia GeForce Now) access to the microphone. I'm going through Sys Pref > Security > Privacy > Microphone. The window says: "Allow the apps below to access your microphone." I'm seeing access for other applications, but the app in question isn't appearing on the list.

I've tried reinstalling the program (twice) to no avail.

Any suggestions?