Nope, the issue hasn't been resolved. I just tried in 3 different browsers. And the message "the selected account is already in use" is totally wrong, because it doesn't occur when trying to create a new account - it appears when trying to log in.
The topic to which you posted is quite old and mostly irrelevant now. I have branched this to a new topic for you.
Please use a different web device/browser such as the latest desktop Chrome or Firefox.
Failing that, please contact Stock Contributor Support: https://contributor.stock.adobe.com/en/contact
Hope that helps.
Already have an account? Login
Enter your E-mail address. We'll send you an e-mail with instructions to reset your password.
AdChoices