Help me please!!

[LennyBicknel]

I have been reading 'The Walking Dead' on iBooks recently, I have been really enjoying it. I was about to buy the 7th chapter of the story when my problem came along. I wasn't sire If i had enough money to buy it, but i thought if i didn't it would have told me. Anyway, I pressed buy, entered my password, then the store froze. It just did nothing. I closed iBooks, and when i returned In saw the book in my library with the downloading bar, but the cover was white, and it wasn't downloading. I reset iBooks, my iPad, but it still does nothing. I tried to delete it, or pause it but nothing worked. HELP ME!!!!!
I have updated iBooks btw.