This is so poorly written! CSS is bloated, and JS code is not even working properly with the examples provided.
Instead of customizing this poorly written plugin I spent couple of hours writing it myself.
Lot of user are use this item and he has really happy, you can trust on sales and 53 reviews, 52 of them with five stars. That proves its quality.
So, I believe that is not a fair review and user should give chance to author to solve here question.