Social profiles connected to NUVI every once in while will require reauthorization due to security measures by the different social profiles.
To see if an account needs reauthorization, go to Settings under Social Profiles.
The authorization will display the STATUS column for each profile attached.
To reauthorize, click the status of the profile.
The profile should reauthenticate without having to open back up the social network webpage, but if it does, click Authorize App.
Note: To reauthorize an account for any profile, you must be logged in as that account in another browser, or it will either not update or add a new account that is logged in on another browser.