Thanks, most likely Itunes support has put a hold on your itunes account so that you cant make further purchases to the game...
What you will need to do is have itunes support call you, or call them and have them unblock your account..
Heres how to do so, click t his link
Then click purchases , billing and redemptions.
Then click " unable to purchase from itunes store", then click continue.
Scroll down to more options, and then click "talk to apple support now"
Then, fill in your name, email and phone number and Apple support will call you.
When they call, let them know that your itunes account wont let you make purchases, and the game your playing and attempting to make those purchases on.. Say that your account seems to be blocked from making further purchases..
It shouldnt take them but a few minutes to unblock the account once they have verified you as the owner..
if you get stuck or run into any issues, let me know.. But once you have unblocked and verified your account with the Itunes store support people, you should then be able to continue purchasing gems..
::Reminder:: Please use the “reply” button to continue the conversation. You are only required to rate when you feel I have assisted you, also please wait to fill out the survey until we have achieved a solution. When rating, please use the the top three faces ( Ok to Excellent). If you feel the need to rate my service with the bottom two faces, please take a moment and send me a reply first so that I can understand how to better assist you. I work to assist you based on good faith, and only receive credit for helping you when you choose to rate with the top three faces. I receive no credit from lower ratings and they reflect very poorly upon me.