In order to get data about your physical activity (steps, distance covered, and a number of flights climbed), turn on the pedometer function on your iPhone or connect your Android phone to Google Fit.
If you are an iPhone user:
Go to Settings - Privacy
Choose Motion & Fitness and make sure that the Fitness Tracking and Health sliders are both turned on (they should be green)
In the Health app, go to Sources -> Find Welltory -> Turn on all categories
If you are an Android user:
Download and install Google Fit
Inside the Welltory app go to My data
Tap the Google Fit icon and enter your login/password
Allow access
If everything is OK, you will see the Connected label