I’ve noticed that the Roku automatically sets up “scenes” in Amazon for major channels like “Hulu” and “Netflix.” Which is great, in theory. Unless you also have an Amazon Echo Show in another room and want to use video skills on that device. That skill apparently uses those scene names to work, and setting up the Roku breaks the linkage. It would be great if Roku set up options for those of us savvy enough to have a broader home ecosystem to edit scene names before they are passed to Amazon (I’ve tried editing it directly in the Amazon app - the conflict doesn’t go away - only deleting the scene works. And every time I turn on my Roku the scene reinstalls.)
If this is something that's happening within the Amazon's Roku channel/app then it's entirely out of Roku's hands. I'm not familiar with "scenes", so I could be misunderstanding, but I believe you need to take it up with Amazon.