Xfinity Already Linked to Another Peacock Account

I linked my Xfinity Account to my Peacock account a while back, only to find later that my subscription was no longer linked. I went to my account to Activate it. When I landed on the Peacock linking page I attempted to sign in and relink accounts. This is the message that popped up:

I use only one email address for subscriptions, so I don't know what other Peacock account I could possibly have. The instructions on "How to Find it" is of no help to me. 

I couldn't find which email I used for Peacock in my Xfinity Account Subscriptions either. I need some guidance please.

Also, I noticed we have two different accounts that are linked, one being for my old home address. I would like to delete the one with the old address, but didn't want to unlink them until the Peacock linking issue is resolved, just in case there is a connection.

Image for Activating Button (as if it had never been activated):