Cannot view library books on Kobo

Last night we downloaded Adobe Digital Editions (ADE) 4.5 for Mac, downloaded some library books, and then uploaded them to our Kobo ereader.

When trying to read them on the Kobo, we received an error message saying that the ereader had not been authorized, so we plugged it back in, authorized it, and then tried again. This time we received a message saying that because we had previously deauthorized the ereader, we needed to reimport the book using ADE. Although we did this multiple times, we continue to get the same error message.

I tried to de-authorize the computer, but then we get the message stating that "Unable to erase authorization. Please try after some time".  (we'll ignore the terrible grammar there...) We tried uninstalling and reinstalling ADE, but it automatically defaults to the AdobeID that we're trying to de-authorize...

Looking at the forums, it would seems we're not the only one with these issues....