Why was the bingo sky thread locked?

A couple of us were in the process of working out a referral order. Then Jayd sent an invite link out and the person signed up under her instead of me. I was waiting for a referal so I could sign up and then I should have been the next in line.
The rules for this forum are not very clear. How long before a new thread can be started? And is it ok to just send out referal links to people wanting one in the thread even if you have already had someone sign up under you? Just doesn't seem very honest or fair in my opinion.