Hi,

After updating to iOS 8, some players may experience problems making in-game purchases; this change is due to new Terms and Conditions required by Apple. 

Simply accept the Terms to continue downloading Apps and in-game purchases. To do so, just follow these steps:

• Open the App Store

• Scroll down to your username and tap on it 

• Enter your password, and confirm that you’ve accepted the App Store's new Terms and Conditions

If that does not work you may also try to:

• Go to your device settings 

• Scroll to iTunes & App Store 

• Tap on your Apple ID

• Sign out and sign back in.