No video iPhone 6 iOS 8.4 – KettleBell Workout 360° PRO - Dumbbell Exercises Cross Trainer Review

After multiple attempts and multiple reinstalls from App Store, the video will not play on my iPhone 6 iOS 8.4. I used to like and use this app until now. Please fix this.
Review by iOS 8.4 video problems on KettleBell Workout 360° PRO - Dumbbell Exercises Cross Trainer.