The latest version of the Sheet Music Direct for iPad app is compatible with iPad 2 or later with iOS 8 or later and looks like this:
The legacy version of the Sheet Music Direct for iPad app is compatible with the original iPad with iOS 4 or iOS 5 and looks like this:
If you have an original iPad you'll still be able to use the previous version of the app, but you won't be able to upgrade to the latest one. This is because new features that are used by the app are only supported by Apple in iOS 8 or later.
For questions about your order, technical help and general enquiries: