These thieves support nothing. Thier app for Android is worse than useless as it fails to support commonly used devices, such as the Galaxy Tab 2. I invested a lot of money in Adobe Digital Editions books, only to be screwed over because Adobe DO NOT SUPPORT the format even close to as well as they should. PISSED OFF!
I have been buying books from Kobo, as well as other places and I read them all on my Android tablet. When I download the Kobo books to my computer, I just change the very long name that they give it to the actual book name, and it saves perfectly to my computer. Then I can read it in any eBook reader on my tablet. I do have problems with the .acsm files sometimes, trying to open them in Digital Editions, but I just keep trying every now and again, and eventually I stop getting the message that DE can't open the file (after it has downloaded perfectly)
Why don't you try reading them with another reader? Just copy the epub files from the My Digital Editions folder, to a folder on your tablet, and away you go - import them into a reader and you'll be reading in no time.
Sorry Adobe, but your Digital Editions is a pretty poor program