same message we get.
Try again.... but no go since Feb/March!
No on demand used with us.
Simply turn on the TV, click on the Roku app to open it and about 60 seconds later that's the message. Not available, try again later. 3 months later still no joy here.
But Plex works great.
Exact same issue here. Using the Roku app on a Samsung 65". Worked fine before but no longer works and I get the same message everyone else is reporting. Tried a chat session with Tech Support but they were of no assistance and did not seem to clearly understand the problem.