Problems with the upload of an ebook from MLOL Library into my Kobo Aura

Hi,

I've downloaded an ebook (epub format) from a MLOL Library and now I have some problems with the upload into my Kobo Aura.

When I try to upload the ebook into Adobe Digital Editions 3.0 this happens: "problems with the licence: E_ADEPT_REQUEST_EXPIRED" (I've attached the screenshot even tough it's in Italian).

What can I do? Can you please help me so that I can read the ebook on Kobo? I haven't had any troubles with the other ebooks so far.

Thanks