Adobe Digital Edition - problems uploading e-books

Hi,

I have been experiencing problems uploading books after many months without issues. The Kobo Customer Service went through different steps with me including updating my Adobe Digital Edition and removing the e-reader authorization and reactivating it. Still not working.

They indicated that it might be an issue related to my Adobe ID. I tried getting answer from the Adobe support team, but they referred me to the Forum.

Anything you can do to help? It seems that my Sony E-reader PRS-T1 doesn't recognise my ID anymore.

Thanks in advance.

MC