Running Roon 1.4 (build 294). Here is what happens:
I start playing some music using the desktop app (Win7) and then go into another room and start up the Remote app on my phone (Android) and the instant that I do that, the music stops and I get the “Trying to connect” message on both my phone and the PC. No bueno. This is repeatable. Going back to LMS and Squeezeboxes until this is fixed.
The situation you are having is not normal. I am currently running Roon on two PCs and have connected 3 Android phones (at the same time) and have never gotten your message. So something strange is going on. To be able to offer suggestions, more information about your setup is needed.
Can you tell us more about your Roon Core, what are the machine specs? Are you running Roon or Roon Server? Can you describe the networking setup, how is the PC connected, how is the phone connected (and I know its wifi, but what band, is it on the same subnet as the PC, etc)? Is your music source local to the Roon server, on a NAS (if so how is that connected to the network)