Re: AMC+ content error when trying to play show???
When you subscribe to AMC+ through the Roku channel, you get a tile for "aMC+ on the Roku Channel" and that's the one you use. Or you go to Roku channel and can find Better Call Saul and/or aMC+ listed there. If you downloaded the aMC+ app from AMC, your Roku subscription doesn't work with it. You have to use the "on Roku Channel" option if that's how you subscribed to aMC+.
For more information about that channel's error codes and functionality, you'll want to contact the channel provider support directly to inquire further. Many channels on Roku are developed and maintained by the channel provider themselves.