Re-Authorize eReader for Library Loans

"Your eReader is not authorized to open this book"

"This book is protected by Adobe Digital Rights Management (DRM). You need to re-authorize your eReader with your Adobe ID using Adobe Digital Editions (ADE). Please visit help.kobo.com for more information"

I have re-authorized usign the instructions several times...removed all books and reloaded multiple times. Why won't it open my signed out library books?