Having finally found out the right way to go about this, I thought I’d share it.
When you’re setting up a website to talk to Facebook, like getting your WordPress website to link up to your Facebook page, you need to provide some information to get them communicating. Plugins like Facebook AWD require the App ID, the Admin ID, and the Page Admin ID.
Let’s get this clarified. Your own Facebook ID, your Facebook user ID, is your Admin ID, since you are the administrator for a Facebook page. So what you need to know for your Admin ID is your Facebook user ID.