All of a sudden when I try to download ePUB library books to my KOBO I get an error message - document not currently authorized for use with your Adobe ID. I have reauthorized my device, but no luck. This has never happened before. Just before it happened, KOBO software was updated, and ADE software was updated.
I tried many things, but what worked in the end was a suggestion from a thread last year. I opened my KOBO and signed off. Then signed back in. That seems to have done the trick. I can now download library books to ADE then transfer to the KOBO and actually open them. HURRAH!! I mainly use my KOBO to read library books and was panicing about losing access.
What was the solution you tried? I have tried everything I have found and nothing works. I'm having the same error message.