It seems to bugged for those that haven't purchased this yet. It doesn't direct you to the purchase screen if you havent gotten it, and directs you to a blank reader screen instead.
Can't access the link for some reason, page not found
So I found a way around this, just go to any other chapter and head to page 85. This one redirects to page 84 and it seems to be broken, which is why it says page not found