You can't save your progress by logging into FB because you keep getting an error message. & it's not just me.On community posts, there are many messages about this & the creators of the app aren't offering a solution.Nor are they answering any questions to major problems that people are having with loosing lives without playing them,having the game freeze & you can't move on,or any other issues. Is the game interesting, yes, but only if you are willing to pay for the experience.Don't download!