I live in VA, the USA, and get this message when trying to add a private channel- the coed you have entered is for a channel that is not available in your area. What is going on here? There is no mention of this in any Roku info that I have been able to find.
Private channels are not supported by Roku, so they won't be able to provide any information about it. But private channels are just like public ones, and can be restricted by geo-area by the developer. That is who you'd have to contact for any information about any such restrictions.
Same issue. I live in FL. I get the same error message for some channels, but not others. For example, I could not add "The internet archive" or dailymotion for this very reason. But NOAA weather radar was added just fine. So, there are issues with a couple of channels that are sort of "alt tech", but no problem with another. Hmmmmm.