I signed up last wen. I haven't got a response yet either. I looked over the terms and conditions for the move.me academia and it said that it should take 2-5 business days to get a response. I guess we just have to keep waiting for PS to at least send us an e-mail.
I'm in the same boat as you guys, I submitted my information a week ago Weds. and have yet to receive an email from Sony. Now the Move.Me page shows that they are out of codes for the time being. I hope I get my code since I entered when it was available.