Ok, I have an Entertainment Pass purely to watch The Americans S4.
Have watched all Episodes this season on catch up on Encore, but tried watching Episode 9 live and get the above stupid message. The end of Poirot was on just now and was playing fine. The Apple TV failed to update the "Live" marker to The Amercians at/after 9pm. Restartted the Apple TV and "Live" is now shown next to The Americans but still get the "Progamme is not Available on this Platform" message when we select it to play.