Yes. Three mails, in fact
Yesterday, the links for downloading the game were saying "error 404, nothing found". 1st mail sent, after testing lots of stuff. They answered me to do the same thing i already did.
Today, i tried again to download the game with the same links "error 403 - Forbidden"
2nd and 3rd mail sent. I'm now waiting for an answer that should come only tomorrow, cause they are located in Europe, and they have to sleep while i lurk on forums to find a solution :p
What kind of offer did you take when you backed ? We took the duo pack, with 2 codes, potion, Musics (which don't appear in downloadable bonus, btw), and i think that's it. I'm wondering if that's a problem of offer, or just bad luck.