Thanks for mentioning our new plug-in!
Connection should be pretty straightforward... Have you made sure that audio is going thru the plug-in on both sides?
The goal of the plug-in is to help making connections (either within an app or between apps), that's why it is not available as an application. If you are looking for an app to host plug-ins and send/receive audio & MIDI to/from it, we already have
PatchWork for this purpose.