There should be Email id of the person in his/her  profile to login using the google account. This has to be done as Fedena does not pull users from google but it checks whether the user trying to log in to the application is a valid Google account holder. Moreover, these settings enable Fedena to understand more about the User profile and thereby can show the required information like the employee ID and the like.

If this settings are not done then the user is likely to get a flash "No user with email" on the login page.