Mr. Nishimura registered his mail to Developer Community successfully, but he is not able to login. He received "unauthorized.." message instead. Please look into this issue.
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Does the issue still persist?
I am contacting the support team and adding you to the loop.
Please note that you should not include the client information such as email, name in the public post.
I have removed the client information from the question.
It is fixed.
Thank you for your help.