Facebook Fan Page v6.0 is using the latest Facebook API v2.8. With this, this extension should be workable for years to come... or until Facebook chooses to change their API requirements with or without notice!
Any time you use an extension that pulls data into your Joomla website from an outside source (i.e. Facebook), you are and will always be at their mercy to deliver the requested data in a timely manor. There are no guarantees that this extension or it's supporting scripts will perform this service based on environments beyond our control.