I haven't heard of this issue. You might want to contact Adobe customer service and try resetting the password for account or get additional details about the account shows as being locked.
Before coming here I spent about an hour on 2 chats with customer service (and a lot longer on my own) because when I was logged in using my email my software registrations didn't show... after their help, I can't login using my email at all. I'm not real keen on going back. Is the phone support handled by different people?
anyway, I just tried again, and I'm not getting the locked error right now....
But I am still not able to log in with my email address, I get a password and ID don't match error.
It seems I need to get this working before I can sign up for creativecloud?
.... as using my id only on the special intro pricing page says I don't have any software registered.... which is wrong, and where I started... and I know Adobe wants me to use my email as my id...
I looked in our call logging software and the email address you use here on the forums and it appears you got things straightened out.