user email not longer available, not able to change user email, verification sent to old email

My email address with which I created an account at the time (email address for registration) no longer exists.

Fortunately, I can still log in on my laptop, but I cannot put the zoom on my device because then it will send a verification code to the non-existent email address that I do not own anylonger.

I have tried to change the email address for registration, but then a verification email is sent to the email address that no longer exists and I am unable to enter a different or change the  registration email address.

how can i do this change now