Nike and Microsoft closed the online service for Nike+ Kinect Training on Xbox 360 on July 21, 2017 PT.
You can continue to enjoy your favorite Nike+ Kinect Training workouts locally on your Xbox 360, but NikeFuel will no longer be generated or sync to your Nike+ account. All NikeFuel generated and synced prior to the closure of services will be visible when you log in to Nike+.
To track your progress and continue to sync workout data to your Nike+ account, join Nike+ Training Club. As a Nike+ member, you can gain the ultimate training experience with over 100 workouts, expert guidance, personalized plans, and more.