Urgent- access to lost notes and hightlights in expired e-book

[#1]

I made an extensive amount of notes and highlights in an e-book in Digital Editions 4.5. When the book expired I didn't have access to the notes. It didn't say anywhere that I would loose my notes when the book expired. Please help me as I have an upcoming exam in a week and have lost hours of note-takings!!

[#2]

I made an extensive amount of notes and highlights in an e-book in Digital Editions 4.5. When the book expired I didn't have access to the notes. It didn't say anywhere that I would loose my notes when the book expired. Please help me as I have an upcoming exam in a week and have lost hours of note-takings!!