purchased books then authorised computer but books don't show up in the new id?

I purchased 3 Pearsons Readers (school books) i continued without an ID, i tired to transfer to ibooks. Realised i need to authorise computer with Adobe so i created an ID. down loaded Bluefire Reader on iPads and logged into my adobe id but none of the purchased books show up in the new ID or on the iPads?? please help the kids go back to school in 2 days