My copy of the quiz was apparently sent out at 1:10am on Tuesday morning, but didn't actually arrive until 4:41 am Wednesday morning, so I think the reason many people didn't get the quiz was probably an issue with the mail servers over at bluehost.com.
Specifically, it took 27 hours from the time it was received by bluehost's outgoing mail gateway to the time when it was actually received by my incoming mail gateway. So, it seems bluehost was having some mail issues yesterday. I would encourage people to wait a little while before requesting a new copy.