Hello Nodak, and welcome to the forum.
I do believe the reason why you cannot access the eBooks, is due to the fact that Scholastic is re-releasing the books.
Judging by a tweet sent by Richard via @RAFforum,
here, Scholastic has sent him an email asking him to take them down. I'm pretty sure it's safe to say that all of the books will no longer be accessible via RAF anymore. Best bet is to look for a .torrent or something.
The upside of a reprint brings downsides as well....