I was having the same problems with entertainment.com. I spent a long time on the phone with one of their customer service people trying to figure out why all I kept getting was a blank page. After a lot of experimenting, this is what worked:
(be sure to clear your cache & cookies first)
Sign in using your email address and password.
This gets you to a page that says "set your location"
Type in the zip code of the location of your book, for Orlando, it's 32812. (Don't try typing in your home address; for some reason, that's what eventually lands you at the blank page.)
This should take you directly your Entertainment Home page.
Hope this helps!