I had purchased a season pass of the 666 Park Avenue but I can't download new episodes #12 for season 1

We are fellow users here on these forums, you're not talking to iTunes Support - I've asked the hosts to remove your email address from your post (it's not a good idea to post it unless you like spam email).

What happens when you try to download the episodes ? I assume that those 2 episodes are available in your country's store (?).