Open the Apple Health app and configure your health settings.
OS updates may add additional settings or reset settings.
It has been reported that if the Apple Health setting is not set, Zones cannot authorize Health and data is missing.
Even if you have already set it up before, please check again.
Health permissions to the app may be reset.
If you have unconfigured permissions, you will be prompted to allow Health when starting the Zones app.
You can check your current status in Apple Health.
If your iPhone or Apple Watch consumes a lot of battery power, health data is not synchronized, etc., there may be some problem with the OS.
Restarting both the iPhone and Apple Watch often fixes the problem.