I had to update my review and commend Chad for helping me out with setting up
the 'Validate a Registration with PIN'
It works and now the officers who are members of our union (there are over 2000 members) can register on the site and have the last 4 digits of their SSN verified at the same time!
WP-Members definitely gets a 5 star rating!
I'm working on a site for my Union at work and had a little issue with the dropdown menu because of my php version and Chad took the time out to help me and get it working. I am very happy with his service and most of all happy with the plug-in as it will only allow members of the Union to register!