If you choose to sign up via Facebook and you don't allow happn to access your Facebook information, your profile will contain wrong information.
However, if there is an error on your happn profile, you can always change your information on Facebook and synchronize it again with happn from your profile page.
Please note that with Facebook Connect, you must enter compulsory, as well as optional information. If you don’t specify the optional information, your profile will be incomplete.
Remember, if you don’t want to share your Facebook information, you can log into happn with your phone number!