I'm guessing if you disable pi-hole Disney will start working. You may have to analyze the traffic Disney is producing to see what exception you need to add.
Hi renojim I contacted Disney who asked us to reboot everything with a 5 min wait time to allow all systems to clear before starting it up again. This included the Roku stick, our modem / router and the TV. It had no impact. I have also tried it all using the hotspot on my phone (with Wifi turned off so G4 data transfer only) - all the other channels on the Roku worked but not the Disney one. So not to do with the Pi-Hole setup.
Disney then tried something else overnight (no idea what) and said the system would not work for about 4 hours. However, we are still left with the same issue. Real mystery. Guess the next step may be a factory reset of the Roku stick?
