N/A in facebook

Look at http://www.facebook.com/drasoraya.munoz?fref=ts. The posts with heading: "Dra Soraya Munoz vindt een artikel op Dra. Soraya leuk. 10 minuten geleden", are the result of liking a page on http://www.drasoraya.eu. Where do the "N/A" come from? How should it look? what have i to do to change it to normal? Cant find anything in the settings of the "Ultimate facebook plug in".