How do I update my apple ID for find my iphone when it is linked to an old deleted email address that is not recoverable
I recently changed my apple ID after I deleted my old email address which is no longer recoverable. I cannot get the find my iphone app to work. When I log in to try and change my apple id to the current one, or delete the account, it asks me for my password to the old email (apple id). I have no idea how to change this to be current. The password for my old apple id will not work and I am going in circles. When I log into the app and use my current apple id it does not locate any of my devices. They all say they are offline but are not. Any suggestions or help on how to unlink my old apple id to this app??
iPhone 5