At the moment new Sports Tracker Premium subscriptions are available for Android app.
You need Android 2.3 or more and Google Play client 3.10.10 or higher to be able to subscribe to Sports Tracker Premium.
It is not possible to make new Premium subscriptions for iPhone at the moment.
Other OS platforms are not supported.
Contact Us inside the app
Android: Settings - Help
iOS: Profile - Help & Feedback
Or use this Form
Phone service is not available