So the main issue is that i can't authorize my ADE to get my books that I bought on Google Play Books. The issue is that it doesn't let me sing in with my google username and password. I can't find any other way to log in. I already connected my Adobe Id with my Google Account but it still doesn't let me read the books.
Having the exact same issue. There is nowhere to login using my Google Account that I linked.
Same here, so I authorized with Adobe ID.
Change the google password to 8-character alphanumeric password might work, I read a post said that Adobe Digital Editions didn't accept 16-character password, including non-alphabetic symbols.