Email Address Update

[FattyForeman]

Plan

Free/Premium

Country

USA

Device

Iphone 17 Pro Max

My Question or Issue

I need to upgrade my plan as I have just ended a relationship and we shared Premium Duo. But in wanting to do so I need to update my email on my account. BUT i had previously made a free account with the email I need to use. So, I just went and closed the account with the email I need to use, but I still cannot use that email address as an updated email address in my original account.... Does this make sense to anyone? 

My original account is an email address I don't have access to anymore as it was from over 20 yrs ago. I want to keep that account due to all the saved playlists and analytics. And I want to update the email address on that account ot my current personal email address, I just cant seem to get it figured out correctly.