Google Analytics+ not showing correct stats


I have using your Google Analytics+ plugin, but recently it hasn't worked very well for our blogs. More and more of our users are complaining about the stats being incorrect, and I'm starting to see what they mean.

I have attached an image showing the clicks on the link from a Facebook-posts, and then the stats. Facebook says there have been 209 clicks, but the blog stats doesn't show anything near that.

The stats use to be correct, as you can see on the image it has suddenly dropped. I can't think of any recent changes that have caused this and I haven't installed any plugins recently.

Can you help me?