The best thing you can do is complete the account recovery form to prove that you are the account owner and disable / re-enable multi-factor authentication to work with the new phone.
Hope this helps
I have lost my old phone and buy a new phone but in unable to login in authenticator app in new phone because authenticator app need access from old phone . How can i login in new phone? Kindly help because i m unable to login in my organization mail and other things.