Haven't come across this before but it looks like this issue is due to the white lists of the major corporate email providers. As the domain has only recently been registered they may be blocking it from passing through their servers, or they simply have no record of it yet and are rejecting it. Try registering with any address that isn't gmail, hotmail or outlook and you will receive the email virtually instantly. Hopefully this should change once the domain name is a little more established.

P.S. Some Gmail addresses have managed to register but there was a long delay before the email came, outlook and hotmail seem to be filtering it completely at the moment.