I just tried uninstalling and reinstalling WOD on both the watch and phone and during this process, I got the big option asking if I wanted to allow access to Health. I clicked yes and made sure everything was turned on. Despite this, it still did not record heart rate and things like power and calories, which were all working until last week. So I think I'm out options. Very sad that I'll probably have to go back to using the native Workout app 
