Hi,
Can you tell us what is not clear? The plugin has a clear objective & is well supported & also works as advertised.
What did not work in the plugin? Did you raise a support ticket with us about your issue?
If not, I would suggest you first do that please before proceeding to give a review. Giving a bad review is the easiest route some people take instead of taking the same amount of efforts in explaining the issue.
:Vishal