Doesn't work on iOS 8.1 – Top Gear Magazine Review

On iPhone 6 plus with iOS 8.1. When I first turned on the app it jumps right into topgear watches (one of the free issues I suppose). Wondering where the main screen is, clicked on one of the image, the navigation bar shows up, clicked on the back button, nothing happened. The navigation bar was gone, and further clicking did not bring the navigation bar back. Closed the app completely and turned it back on, only got a white screen and the app would never load from that point. Please fix.
Review by Antairez on Top Gear Magazine.