I can't play this game on my Kindle for the last 2 days. What's the matter?
Try to reinstall the application, but before you do that, remove the current version (make sure to backup your profile or log-in with a supported service like Facebook/Google+) and then reboot the Kindle. Install the app again and log-in to restore the account. I have played the game and it works just fine. It crashes every now and then, but besides that, the game is working as it should.
Official website: https://play.google.com/store/apps/details?id=com.kakapo.worldbingo&hl=en