Hi there and welcome
What exactly happens when you try to download the game?
And on which device are you trying to download it on?
Please let me know
When you try to install it, what error do you get?
This is usually an issue with the Firmware, so I would first like you to do this please.
Remove the charger from the Kindle and hold the power button to off for 35 seconds.
Release, then connect the charger and try to turn on the Kindle and access the game.
Let me know the results please
go to this link on the Kindle
Ca you download it from there?
ok, what happens when you try to install it there?
are you able to install other apps from the app store?
ok, can you try now for a test please
Can you do the following on your computer please
there is an option "Country settings"
Is this set to united states?