@Madridi don't worry about that it is completely offline, they can't do anything
It is not possible for them to force an update in any way. It's contenthax based, and will work offline just fine.@jam1garner
My understanding is that the app is just a front end app. Meaning they can change how it works from amazon's end, and for you to get a working app again, you would have to update it, which will obviously have tha hack patched.
YouTube from what I remember did something similar on the 3ds. I don't remember it entirely since I never used it so maybe someone can further elaborate.
Other than that, good luck