Acrobat.com issues

I uploaded a book from my Windows 8 mobile phone's Adobe Reader app, to Acrobat.com so that I could read it on my laptop, after a confirmation message appeared that my file was saved to cloud, I returned to my mobile library and the book had been deleted. I then went on the check Acrobat.com on my laptop for this book, and a message is displayed that I do not have any books. What's up with this? I payed for that book, now it's just up and disappeared.

Reply would be greatly appreciated.