To connect your Fitbit device to World Walking via our website click on Settings and then click on Apps on the menu that appears.
In the Other Apps section you will find a Connect to Fitbit button. Just click it to connect your device with World Walking.
When you do that the fitbit.com webpage will open and you may be asked to log in to your fitbit.com account. Enter your Fitbit.com email address and password then tap “Login”. Next, tap “Allow All” to provide World Walking with your activity information, then tap “Allow”. You’ll be taken back to the World Walking app and your Fitbit steps will sync from then on.