How do I pair Fitbit and Garmin as my Activity Tracker to the Challenge App?
Fitbit and Garmin
Select Fitbit or Garmin on the Select Tracker page. Enter your username and password for your Fitbit / Garmin account and accept the sharing of your step data via the secure Oauth framework. Once that is setup, your step data will be transferred from the Fitbit / Garmin cloud to the Challenge app when you click Tap to sync steps on the Summary Page in the Challenge App.
NOTE 1: only steps taken AFTER you pair your Fitbit or Garmin tracker to the Challenge app will count toward the Challenge. So make sure you get setup before the Challenge period begins.
NOTE 2: the Challenge app gets step data directly from the Fitbit and Garmin clouds. If you do not see your new steps that you have taken on your Fitbit or Garmin tracker appear in the Challenge app after you click the "Tap to sync steps":
check that your Fitbit or Garmin app has synced the data from your tracker
check that your Fitbit cloud dashboard or Garmin Connect cloud has also received the updated step data