I have a same problem.
iMac (Retina 5K, 27-inch, Late 2014) OS 10.12.6 (Sierra) EyeTV 3.6.9 (7520)
Message on screen said "This channel is currently unavailable”
Under the message, More info (link) http://services.geniatech.eu/l/playerPaneStatus_NotRunning?buildnumber=7520&country=AU&language=EN&hardware=98&input=1&systemtype=2
My signal quality and strength are 100%, and send a message to Geniatech.
Geniatech customer support seems unhelpful...