I am so fed up with this company. No longer any way to contact support for answers to questions or solving of problems. I had no idea that if I authorized a book without using my ID (which is a choice offered when activating) that the book would forever "belong" to that computer. So even if I activate a new purchase using my ID, I can't access the first book on that computer. This is tyranny. I own the friggin' book, not Adobe. Their only goal is to control their products, except in this case, the product is a magazine I bought, nothing to do with Adobe but becomes imprisoned in their system because it has to be read on ADE.
Like other corporations, Adobe's focus has shifted from providing a useful e-reader to selling books and other content. If you didn't buy the content through Adobe, they no longer care whether or not it's available to you. The ebooks available through my library must be downloaded and read using Adobe Digital Editions, and that function is now broken. I can check out an ebook, but not download and read it. Apple's gone the same route with its latest macOS update.