When using Apple Health to sync data to Motion Connected, there are very few common reasons why activity data won't sync to your account.
1. Do you have the Link to Apple Health turned on in your Motion Connected or EHP Healthy Choice app? In order for data to be synced from Apple's Health app to your account you must first setup the Motion Connected or EHP Healthy Choice app to pull/sync your data from Apple Health. This is done by turning on the "Link Apple Health" option on the Motion Connected/Healthy Choice app's settings page, and allowing all permissions.
3. Do you see your data in Apple Health but not in your Motion Connected/EHP account? If your app is showing 0's for activity data, this may be caused by Motion Connected (or EHP Healthy Choice) not having access to your Apple Health Data. To make sure Motion Connected (EHP Healthy Choice) has all the necessary permissions within the Health app: