I just installed "pay with a like" on my site and the exerpt looks funny.

I installed it and everything looks ok. I did manual excerpts.
I highlighted the area I wanted protected, and hit the button. Seemed to work fine, and the tags were put in the right place on my posting.
However when I look at it under preview... there is a whole bunch more of the post that is missing / protected.

Is there a setting that I have screwed up?
Only a few initial lines show, but the rest of the unprotected text is not there.

I have to run out for about 2 hours...so take your time.