I have the exact same problem. The plugin shows unrelated blogs under my post. I could not even enter the feature of managing it, since when I typed name and e-mail, the page gave error.
SO, I decided to remove it. I removed it, deleted totally, HOWEVER the ‘Related Blogs’ STILL appear under my posts, making my blog totally unfunctioning and myself losing revenues.
Changing to Html mode ioa totally IMPOSSIBLE, sinve I have many many posts. It will take a life time!
IS THERE A SOLUTION?