eReader is not authorized to open this book

I've seen this problem on a few different threads, but nothing within the past year. Are people still have trouble like me? Borrowing books from the library and importing them to my kobo touch. When I go to read it on my kobo a message pops up that says this book is protected by DRM...you need to re-import the book using ADE. I've tried this over and over, different books, resetting my computer and kobo, redownloading ADE...nothing works!!!