Unless you're more interested in Facebook app development than in actually using your WP site or interacting with human beings, WALK AWAY. Delete this plug-in, and hug your loved ones. The only way to make this thing work is to teach yourself to navigate the trainwreck that is the Facebook Developers site, and to keep on coming back to it each time Facebook breaks the custom app you spent so much of your time banging your head against the keyboard trying to figure out how to make it work. In particular, if you want to use the feature that posts your WP articles as updates on FB, you will find it less time-consuming and frustrating to simply post those FB updates manually. A carefully crafted piece of software can save you lots of time in the long run, but this is a half-baked mess, and will have the opposite effect.