First, it's protocol to post an issue only once on the forum. You posted
I read the other thread, and there are a couple of messages being
displayed. So, let me go through them also in this post.
One of the messages was 'no permission to copy here'. That message tells
you that there is copy protection in place for that particular ebook. The
publisher has specified that you can't copy the ebook to another device.
This is digital rights management in action, and there's nothing further
that you can do legally to make this go away.
Another message relates to whether a device was authorized. The process
for setting up an ereader involves going to the website for that ereader
and registering the device. When you do that, the site will download a
small file with that information onto the ereader, and ADE reads that
file when you attach that ereader to ADE. If the device wasn't registered,
ADE won't be able to work with it and gives this message.
We have a small dilemma here. It's much easier to register all of
the ereaders with your Adobe ID, because ADE won't have this problem if
you do. But that's not practical because you want to have each ereader
with its own ID. So, ADE gives you the ability to switch ADE users by
deactivating one user ID and then change to another user ID. That process
is described in the HELP files of Digital Editions.
Don't forget the maximum number of two computers and four ereaders, however.
Hope this helps!