This is one part of you plug-in I have issues with. You do not make it so the "Excerpt Options" can be enabled/disabled.
This is frustrating, because the plug-in seems to be mostly functional, except for this part.
The Paragraphs Number and Words Number aren't even close to correct, causing issues I would consider to be quite major, when displaying archived posts especially.
In addition, the "Excerpt Options" the %total_words% variable, doesn't work.