Help!!! I didn't received the activation code.

Hi guys, I’m new here and have problem with my Cubase Elements 8 which I bought today. I’ve got 50% offer for Cubase Elements 8 from steinberg to update my AI 6. So I bought it for $54 with taxes. I have the receipt with order number, but they didn’t send me email with activation code. So I downloaded what I’ve bought but it ask for the activation number which suppoused to be send to my email. Does anybody faced similar problem or may be someone knows what I have to do? Thanks!