I'm on a Samsung Galaxy S10e with Android 11, One UI 3.1
I installed the app and went past the intro screens. Now there's a popup in the middle with a spinner that says "Activating Remote control feature..."
It just stays on that screen forever. I tried ending the app and reloading, restarting the phone, and clearing the data, but it just stays stuck on that.
Behind the popup greyed out I can see the "Your ID:" with an ID number. And a green dot that says "Ready to connect (secure connection)". If I attempt to connect to that number it says "Incoming connection" then "Awaiting authentication", but the "Activating Remote control feature..." is still there so it never pops up asking if I want to allow it.