If your the one who is gonna be on here taking care of things your email needs to match that of the license holder's address on file for the license.
It is how we protect our intellectual property and keep the forums open to all. We protect certain info from showing to non-license holders so we have a special verified customer usergroup that license holders get bumped to see the mods and code blocks etc and access certain members only things
http://www.photopost.com/forum/before-you-buy/announcements.html