I have the same problem with my kid, the app does not load in iOS, it just closes after a second. After when opening the multitasking mode you can see the loading page but as you pick it, it closes again. We are trying to play it through wireless in an iPad Mini Retina with iOS 8.1. We do not have yet the Bluetooth portal.
I can say that this is really underwhelming, especially for a paid app and I really expect resolution soon.