I now also found that a 3rd machine cannot be connected to using autodiscovery. I put it on my laptop pc which is only win7 home premium so no rdp but I installed tightvnc with loopback connections allowed. I can setup a manual vnc connection to this machine from my ipad, but again trying to connect on the companion app discovered connection just sits at the loading screen forever.
Could this have anything to do with the fact that I started using the free pocket cloud app which is limited to 1 connection?? I have since bought the Pro version of the app, but it seems I am still only able to autoconnect to the pc that I connected to in the first instance with the free app??