Changed my Facebook password now I can't get into my game.

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So I recently had to change my password on fb so then I went to go play mpq and rather then letting me play it switched over to Facebook. I know I saved the back up on my iPod to my fb. So should I move my game over to my ipad or is there a way to get into it without switching?

And which ever is the right answer.... How do I do that?