Help

elainew2

I have a Kindle fire HD and every time I tried to buy anything when I'm playing the app I can't and it's so frustrating I even tried to download Kim Kardashian takes Hollywood on my phone and the same thing happened I can't buy anything when I'm trying to play that it almost makes me want to stop playing but I'm addicted to it so I don't but I need to be able to buy more money and coins and all that other stuff and I can't please help me