I have installed ADE on a MacBook Pro running OS X 10.11.2. Next I created an Adobe login successfully.
When I try to authorize the computer with an Adobe ID it get the error message saying that the login and/or password are incorrect.
Have de-authorized, uninstalled, rebooted, and always get the same error message.
I contacted Adobe Help via a Chat but they could not resolve the problem.
I have also seen a couple of similar posts on the forum.
Pretty clear to me that this is a bug that Adobe has failed to address. But I am willing to hear any recommendations.
Try reset the password and used only Letters and Numbers in your Password.