Wow--wait a minute. So at first, it said they weren't available? (Not, "we can't process your order"). Normally this means that they're gone, that's it. But after that, you DID get the RZ? Wow. If so, that means that we shouldn't believe it when it says "not available". I'm confused.
I think what he meant was that he initially tried to obtain 4 tickets in the red zone, which failed. Then he tried to get two, and was successful. The lower the quantity of tickets desired the greater the amount of availability.