Similar to how this thread started, I am unable to get the desktop app to find/recognize my phone to authorize the AirMirror. I also sometimes get this weird little extra pop-up on my screen which I was able to get in a screen shot, but neither left or right clicking on it actually does anything. I've been trying for a while now and still can't get the AirMirror to work. I won't be signing up for Premium without that feature available.