As far as I know, The Adventure Shop only sells downloads.
You should not have used an email address that you can't access any more because that is the way The Adventure Shop sends you the download information. You might check to see if you can update your email address after logging into the Adventure Shop website. If that works you can ask Adventure Shop to resend your download information.
The contact email that I found on the AdventureShop website is:
support.adventureshop@gamesplanet.com
If you ever need another email address, you can get a free gmail email account at
https://mail.google.com/or a free hotmail account at
http://explore.live.com/windows-live-hotmail-get-startedAlso many ISP's allow you to have more than one email address per account, so you can check whether yours does or not.