Cannot open library books on Nook Glowlight

I am unable to open ebooks from the library on my Nook Glowlight 3. I just started having this issue.  This is what happens:

I transfer the ebook to my Nook

I try to open the ebook on the Nook 

I get a message asking me for Adobe ID and password - THAT HAS NEVER HAPPENED BEFORE

Then I get an error message that says This book is  not activated for current ADE user

HELP