If you failed to receive credit for the "Like us of Facebook" quest, please take the following steps to correct the problem.
First go to the appropriate Facebook fan page (i.e. https://www.facebook.com/wartuneonline?ref=ts&fref=ts for Wartune) and unlike the page.
Next, make sure you are logged out of the game, then clear your browsers cache and cookies, then close your browser.
Finally re-open your browser, log back into the game and be sure to push the "like us on Facebook" button in the game (NOT directly on Facebook)