iPad 2 factor authentication without Iphone
I set up 2 factor authentication on my iPad using my iPhone that I no longer have, how do I remove or change that now that I have updated my software and can no longer use my iPhone as my authentication?
Ash so you have two-factor associated with a telephone number and a device you no longer have.
How to use account recovery when you can’t reset your Apple ID password - Apple Support
Contact Apple for help with Apple ID account security - Apple Support
After you recover access, I’d suggest setting up a recovery contact, recovery telephone number, or such.