I know my new Apple id and password but it is defaulting to my old apple id how do I change apple id

If you have changed your ID or password, have you followed the steps in this article? Make sure you turn of Find My Phone before signing out of the old ID. Once signed out and Find My Phone is off, then sign in with the new ID, then turn Find My Phone back on.

What to do after you change your Apple ID or password - Apple Support.  *

Baby jojo

I cannot seem to edit by apple id which is not an email address which is no longer in use. It allow me to change but doesn't change.