Domain has removed in Vercel before, Certbot failed to authenticate

Requesting a certificate for taskify.my.id and www.taskify.my.id

Certbot failed to authenticate some domains (authenticator: nginx). The Certificate Authority reported these problems:
  Domain: taskify.my.id
  Type:   unauthorized
  Detail: 76.76.21.21: Invalid response from http://taskify.my.id/.well-known/acme-challenge/Uq3h64Vao8-xDAivnOsIOziHrQMOyRvQ-FK5lEAEeoE: 404

  Domain: www.taskify.my.id
  Type:   unauthorized
  Detail: 76.76.21.21: Invalid response from http://www.taskify.my.id/.well-known/acme-challenge/B7ArOUT2hL5LhWi2KM0hAegkrEjixgKHKMZAAUOfc0c: 404

Hint: The Certificate Authority failed to verify the temporary nginx configuration changes made by Certbot. Ensure the listed domains point to this nginx server and that it is accessible from the internet.

Some challenges have failed.
Ask for help or search for solutions at https://community.letsencrypt.org. See the logfile /var/log/letsencrypt/letsencrypt.log or re-run Certbot with -v for more details.

Dear all,

I have difficulties to solved this, my nginx configuration is right but still show error above, before that my domain is pointing in vercel.com then i try to delete with success that, but in front page show like still remain in vercel

What does "remain in Vercel" mean actually?

What's the IP address of your own nginx server and why wouldn't you simply update your DNS zone to correspond with that IP address instead of one of the addresses of vercel.com?

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