I have the same problem. Did you find a solution yet?
I'm afraid not. No reaction here and Adobe just said they don't support iPads...
Have you tried the following solution?
When you add a book to your Readmill library, there’s no need to worry about whether it’s protected with Adobe DRM. You can simply upload it to your library and open it in the iOS app, as you would for other ePub and PDF files.
But for those who need greater flexibility, their latest update for iOS includes the ability to authorize multiple DRM accounts from within the Readmill app.
Navigate to Settings from your app profile page. Select ‘DRM accounts’ and then ‘Add.’ Choose the account type, enter your credentials, and make sure to tap ‘Save.’ You can now read any DRM-protected books associated with this account.
The Readmill iOS app also allows you to change the default DRM account that authorizes new books. For example, if you prefer to have all of your books authorized with your Adobe ID, you can set this as your default account. Navigate to ‘DRM accounts’ in app Settings and select the account you want as the default from the list.
TThanks Arnaud for your reaction!
the problem is that i deleted the readmill app when i got the e-mails from them that they went out of business. And in the app store i can't find them anymore.
so i don't have readmill anymore and i can't read in other apps.
I am having the same problem on my ipad. Strangely enough, I have a new Iphone 6 and I can read the book on Bluefire on it with no problems, but I never had Readmill installed on it. I redownloaded Readmill from the cloud to see if I could somehow decommission it and commission Bluefire, but couldn't go deleted Readmill again. I get the same message when I try to open the book in another reader I have on the IPad, that is one of the suggested spots for downloading the book. In my settings on the ipad, Bluefire doesn't show up so I can't go in there and fix it either. Very frustrating, as it is hard to read a book on my phone!!
is there still no solution to this?? I cant use my ipad to borrow e-books fo my education because of this! We can not decomission ReadMill, because ReadMill doesn't exist any more. therefore we can not commission bluefire. This is a huge issue for me in my studies, and its hampering the value of having an ipad to me. Above all, it makes me really upset with Adobe that you would leave this issue unsolved for over a year!