Auto-posting to facebook, removing ALL fb sites from menu

I have set up auto posting to facebook on the Ultimate Facebook plugin.

In the API setting page, I have successfully connected to my business page on facebook but when I come to publish a post, I go to the facebook publishing area but ALL of the pages I manage are listed on the accounts drop down menu, but I only want the one fb page to be listed.

I have ticked the box to say "Prevent access to my linked accounts" but that removes ALL fb pages.

Is this something I've done when setting up the application at the facebook end?