Tried to borrow a book, but the Adobe Digital Edition 4.5.11 simple does not work for this purpose.
It's possible to load the book into the app, but from there it can neither be read nor transfered to a e-reader.
Have tried to return and borrow the book.
Reinstall the application
Update to the latest version
Authorize cycle both the app and reader
Another issue with this program, it readds returned books, deleteing books simply cause them to be readded when the program is restarted. If you try to delete and redownload a book, then you end up with multiple copies of the same book.
I had similar issues. I was able to get books onto my Kobo but then it kept giving me authorization errors and I wasn't able to open them. The duplicate books in ADE were especially annoying. I ending up uninstalling 4.5 and installing version 3.0 and it works perfectly. I have an older Kobo so I'm not sure if it's maybe an issue with compatibility.