Crave tv may not work properly on Fire tv stick because the app has not been upgraded yet to the new Crave app that is now available.
It's working okay (or at least as okay as Crave ever works) on my Fire stick.
It worked a lot better on my Android before the upgrade. Nothing would play afterwards. They've upgraded it again at least twice more in the last few days on my Android. It's pretty much back to it's old flakey self. On one hand, they have added download capability. On the other hand, that hasn't worked yet. I've downloaded a few things ... and not one will play.
Meanwhile Netflix on Android works flawlessly, including downloads.
Same old Bell Canada ...