Tried one last thing this morning. Cancelled my AMC Plus account and then started a new account using a different email (and getting the Black Friday discount.). Absolutely no change - AMC Plus will still not play on our Roku Ultra. This is definitely a Roku issue.
Dont know if this will work for anyone else but...if you go to settings then under privacy select advertising, uncheck the limit ad tracking and reset advertising identifier then restart your roku. I hated doing it but i can confirm this worked for me
I too am experiencing the exact issue @jwight01 reported. I took the very same steps but instead, I reached out to AMC Plus support and confirmed my subscription is active until August 2022. Their support team is also looking into this issue as well. The message on the screen that appeared every time I clicked on Play to watch playback of any episode is below:
We’re sorry, this content is not included in your subscription. Error Code 403: RESOURCE_PROVIDER
That is exactly the same thing happening with me. I've contacted AMC plus several times and they told me that it was an ongoing issue with Roku and they did not understand at that time what was going on and what was causing it. They never gave any solution to it whatsoever. But they told me that it looks like that it is a Roku problem. Where Roku is blocking the content. Not sure why, but that's what they told me.
I can absolutely confirm that once you go into privacy and you click off the advertising limit ad tracking your AMC plus will work again.
I can also confirm right now that by going under your settings in Roku and then going to privacy and removing the check out of the advertising box and then click reset advertising, then go back to home screen and try it again and it will work. That is what is actually stopping it. I'm not sure why that having a check in that box to limit the ads would stop it, but it is. It is actually working now. That is the solution to the problem thank you to the others for posting their solution. It does work!