I got a mail, and now its works perfectly, thanks Emily!
I also got this horrible "404 Not found"-problem...
It only happens then i try to download the second game from the "find my order" page, the link i got per mail is just not work at all. (trying to activate the demo isn't working either)
1) Season set.
2) I activated the demo.
3) A few (1-2) weeks after the first episode was online.
4) See above...
Sorry to bother you..."