Problem trying to download the EPUB version of a book I am borrowing

I have borrowed a book from archive.org, for a fortnight, which I have been reading on my tablet using Adobe Digital Editions.  There is an option to download the EPUB version of it; when I click on this a file is sent to my tablet and is named UTLLink.acsm.  If I do it again, I get another file, named UTLLink(2).acsm. And if I do it again, I get another file, named UTLLink(3).acsm.  And so on.  My problem is that when I select any of these files, Adobe Digital Editions opens with an error message that reads as follows:

"Unable to download

Error getting License. License Server Communication Problem:

E_ADEPT_REQUEST_EXPIRED"

So the download doesn't happen.  So I don't get he EPUB version of the book I am borrowing.  And I don't know how to overcome this obstacle - which seems not to be of my making.