Use your email Id and Password.(Please ensure that your own the email address you are entering as username)
After you are successfully authenticated by Facebook, you will be presented with a User Profile screen.
In User Profile add your Display name, your Phone Number and click at location icon to add your location. (each of these three inputs are important to proceed further)
Once you have entered the required information Save button in the User Profile screen will be active and now you can save your profile to start adding and view the tasks in your local area.