Having trouble with Ultimate Facebook

I am currently trying to connect my client's Facebook page to his new website, with no luck. I have tried creating a Facebook app in my developer account, and that didn't work. I then walked my client through the creation of a Facebook app in his own developer account, and that still did not work.

I posted a few test posts, and they are not being posted to my client's Facebook wall.

How do I get the app that has been created to be associated to his specific Facebook page? It seems like there is a missing step in here somewhere.

Thanks!