If you are still having trouble getting Ultimate Facebook to do your posts for you, here is a solution you might try as an alternative till you can get it going.
This is not as powerful as UF, and doesn't do all UF can do, but it does send your posts to Facebook (and other places). And it is free, and easy to set up. You don't need your own Facebook app to use it.
I have described all the steps in my blog post. I hope it helps someone, if you are still having problems getting your app approved and are in a hurry.