RoccoVR RoccoVR Ahhh sorry, misunderstood what you were saying but I think I get it now.
The PC app is for PC-based headsets, and isn't meant to function as a standalone Windows app (at least not currently AFAIK). If you load the app while using a Valve Index/HP Headset/Oculus Rift/etc. you will be able to use the headset display to see the app and use a mouse & keyboard while in-app (though it seems like the mouse is more of an "enter" button from my experience).
If you're not using a PC-based headset and launch the app, it won't be useable.
Let me know if I'm still misunderstanding...it happens a lot 😅