Absolutely LOVE it when it actually works

I have a iPad Pro 9.7", Apple TV, iPhone 7 and Apple Watch all on the latest software. I love the calories and heart rate being displayed on my iPad or Apple TV, but it has never worked through an entire workout. Then I spend 10 minutes trying to fix it which totally throws off the workout. More troubling than that is when I am done working out it gives false data sometimes saying no calories burned or zero minutes and other times showing 999 minutes. Does anyone have this working consistently?

canonmn about BODi by Beachbody, v2.0.1