IOSRTC won't work


Good morning,

Does anyone here have experience with IOSRTC?
We tryed a lot but it will not working here. A simple problem that i can descripe here I can’t give.
The problem is: “undefined is not an object” thats all. We think it related to: window.device.platform, but when we want to install: “cordova-plugin-device” the whole app won’t start up!

So does anyone know a solution for the problem or has anyone been working IOSRTC and can help us?

Sorry for my bad English!

Greets Vincent