Issue buying gold!

Hi,
It seems I have an issue buying gold. It simply won't let me telling me I have an incorrect password for my Apple ID even though I don't. I have tried force closing, delete and reinstall. Even changed my password but still no luck.
It would seem it's a problem on your end because I don't seem to have a problem with any other apps. I even downloaded the Dragon Story app after deleting using my new password.
I don't want to miss out on the current gold sale so if you could look into this matter it would be greatly appreciated.

Can you please try reinstalling the game while you are logged into the Apple ID you'd like to use to purchase your Gold? Please let us know if this continues to be an issue.