I just switched from an iPhone 6S+ (IOS 10) to an iPhone 7+ yesterday, and the TomTom Go Mobile app will not finish loading on the new phone. It just sits there spinning saying "App cannot start. Check your internet connection". All other apps have internet connectivity, I have tried a normal power-off and on. I've tried a hard-reset and power-on. I've tried uninstalling/re-installing it.
Anybody else have a similar issue?