well, you've sited a two problems, however.  you had the email sent to the incorrect address, and if that email was set like your other, it might have been deleted as junk mail.  the point being, you probably were sent the email and now need a second email.  you've contacted him about it, i know, but usually it's a more difficult situation (usually = with most vendors).  wait some time, and if you don't get a response, you might try to get someone to send him an email in japanese.