Health App not updating steps or running data from Fitness app or Apple Watch

I have been battling this for some time now and I've tried EVERYTHING I can find on the net, but still my Health App does not regularly and accurately update data on Steps and Running Data from either the Fitness app or Apple Watch.

All my settings are correct - I've triple-checked... if I go for a run, it shows on my watch, it shows on the fitness app, but it doesn't show on the Health App (neither the steps nor the running data show on the Health App.

It's driving me crazy!!!