How do I open a library book on a recently acquired Samsung Nook? I get "too many activations" error. I have an active adobe digital editions and my other devices work fine. Custumer Support was unable to get the new device activated.

I have a library book on the bookshelf of a newly acquired Samsung Nook but I cannot open it.  My other devices work fine but I cannot activate the new unit.  I get a "too many activations" error message.  Customer Services say I have a valid license but they deemed my problem to be a technical issue and referred me to the forum.  Thanks