Thanks for sending along this further info about this scam.

I forget what the odds were that were listed, but I remember they were fairly high to match four numbers. Still, I did match four numbers over the years several times. But I began to suspect that it was at least impossible even if it wasn't a scam to match five numbers let alone 7.

Every so often they post the picture of someone who claims they won.
I'd be willing to bet that the picture is of an employee of the company or some family member.