Update! I just discovered that my Kindle Fire HDX was telling me to update my Cruncyroll app. I had to sign out and back in to fix the que issue I was having but it's looks to be working again (have to run it through some paces first to see if everything is OK, though). More important, the app is back in the Kindle Fire store for the first time since at least July. Hopefully things are back on track over there, though it would be nice to have a CR Manga app available for Kindle HDX's as well.