I had the same problem for about 24 hrs.
I deleted and reloaded the app from my Kindle Fire HD 4 times with a few hours between and finally it worked. I've got version 4.4.31 now and it seems to be okay.
When I first got in it had two 1/2 second freezes and then smoothed out. Landing seems easier. I think I'm having a slight issues with hit consistancy (shooting blanks?), could just be me, but it seems a little off compared to how it has been in the past.