The app currently supports iOS 6 devices, please plug your apple device into iTunes and update to the latest version of iOS 6.
The app runs on iOS 6 supported devices:
iPhone: iPhone 3GS, iPhone 4 &iPhone 4S
iPod: iPod Touch 3rd generation & iPod Touch 4th generation
iPad: iPad & iPad 2
Please make sure you download the correct app- there is an app for iPhone/iPod Touch, and a separate app for iPad. Please take care when choosing the right app to download!
Make sure that you are not using a wifi connection that is using a proxy server. If you are unsure, disable your wifi when using the app