When I try purchase the screen just say: "error" and then goes back to the purchase screen. I'm in Australia so it has been released here and I have tried this on both an iPad and an iPhone
I am having the same problem. Don't know what to do.
Please close the game and all other applications running in the background. This should free up necessary system resources. (To close an app running in the background on iOS 6 and before: double tap the home button to make all running apps appear at the bottom of the screen, hold down on an app you wish to close and red buttons will appear, tap the red buttons to close the apps. If on iOS 7, double tap the home button and swipe up on the open apps to close them) Also, please turn off your iOS device for at least three minutes before attempting to play the game again. This will allow the device’s cache to clear.
After starting your iOS device back up, please start the application, and the second episode should now be available to download. I apologize for the inconvenience.