Reach out to Apple Support at -- Contact Apple for help with Apple ID account security - Apple Support.
Apple IDs never stop existing. While the E-mail address associated with them may stop working or be cancelled. the Apple ID remains and can still be accessed with the proper password.
It is always highly recommended to update the email address for an Apple ID when it stops being functional.
If you do not remember the Password for the Apple ID and you had no recovery email in place for it outside of the one that no longer works, then you will need to contact Apple Support and attempt to recover it with them.
Fill in the form here to Contact iTunes support for Account Security.
Make sure you have a copy of the original purchase receipt.
Apple Support by e-mail or chat Select your device, Battery, Power and Charging, then Power adapter not working to get a chat option. If you need to talk to them, ask them if they will do a Skype or FaceTime with you.
Question: Hi, my ipad is blocked with my old apple id and it doesnt exists anymore. what can i do? because i cant recover the account because it does not exist. i can use my ipad HELP (im from argentina where there are no offical apple stores to go)