Just wondering what they do to approve your refs. Thanks!
They probably check to make sure they have completed their offers, have only done those offers once, make sure they only have 1 account ... I can't say for sure about the process, but the end result is they are checking to make sure that they will be paid by the affiliates for each person.
I may not be accurate on this, since I'm not a site owner, but I hope it helps a little.