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

You probably know by now that the Zoom Web Portal is here: https://zoom.us/

But then -- if you're already logged in and you want to do anything -- you have to click on the blue My Account button: 

... and then find the menu item you're looking for along the left side.

If you're handy with shortcuts, there's an easier way!  Take a look at this list:

• Zoom Web Portal Profile: https://zoom.us/profile

Personal Menu

• Personal Meetings Menu – Upcoming: https://zoom.us/meeting#/upcoming
• Personal Meetings Menu – Polls/Quizzes: https://zoom.us/meeting#/pollTemplate
• Personal Webinars Menu – Upcoming: https://zoom.us/webinar/list#/upcoming
• Personal Phone Menu – History: https://zoom.us/pbx/page/telephone/myZoomTelephony#/my-cloud-phone/call-log
• Personal Phone Menu – Voicemail: https://zoom.us/pbx/page/telephone/myZoomTelephony#/my-cloud-phone/voice-mail
• Personal Whiteboards Menu – All Whiteboards: https://zoom.us/wb#/
• Personal Recordings Menu – Cloud Recordings: https://zoom.us/recording
• Personal Settings Menu – Meeting: https://zoom.us/profile/setting
• Personal Reports Menu – Usage Reports: https://zoom.us/account/report?isPersonal=true#/usageReports

Admin Menu

• Admin User Management – Users: https://zoom.us/account/user#/
• Admin Phone System Management – Users & Rooms:  https://zoom.us/pbx/page/telephone/phoneUsers#/users/phone-users/assigned
• Admin Phone System Management – Logs: https://zoom.us/pbx/page/telephone/callLog#/sms-history
• Admin Account Management – Account Settings: https://zoom.us/account/setting
• Admin Account Management – Billing – Current Plans: https://zoom.us/billing
• Admin Account Management – Recording Management: https://zoom.us/recording/management
• Admin Account Management – Reports: https://zoom.us/account/report#/usageReports

Dear Sir,