I had a client account but also a freelancer account. I closed my client account and now I want to change the email address I have to my freelancer account with the email address I had in my client account.
Please note that creating multiple accounts is a violation of the Upwork ToS. You can be a client and a freelancer using the same account. Simply read this article for more information. One of our team members will reach out to you and assist you further.