I'm sorry to learn about your colleague's account. If he needs further assistance, he may directly get in touch with us so that we can assist him. Unfortunately, we are unable to discuss details of another user's account with you for privacy reasons. We hope you understand.
Yes, I understand that it is privacy, but he can't reply in community.upwork.com.
He get the error:
"You do not have sufficient privileges for this resource or its parent to perform this action.
Click your browser's Back button to continue."
About Community Guidelines - ok, I understand.
I try to say that he doesn't access writing messages to community.upwork.com. How can he write to you? Can you say who can help him?