Having Problems Activating My Peacock Premium Account

I am a Diamond Rewards Member and I am having problems activating my Peacock Premium Account. I previously had the service, but the email address that I was using somehow got disconnected to the account. Whenever I try to reactivate it using the same email address as before... I receive the following message "Your Xfinity account is already linked to another Peacock account." How or is there any way to fix this issue?

Thanks in advance for your assistance.

v/r