Angry Birds Seasons secret levels?

[AT1988]

so I was playing Angry Birds Seasons, and after getting all levels completed on the easter egg level and the valentines, the next screen has the three extra levels u gotta click on the facbeook or twitter thing for. I noticed that once I've beaten them, I can click the next arrow. On some of the episodes, the game crashes. On the easter egg one, it takes me to a few levels like "1-1" that aren't in the episode. On the Valentines, it glitches out. Whats the deal?

 

[El Presidente]

If you "Like" the facebook page via the game, you'll be granted access to them.