Failed to renew certificate

@rg305
I've removed the overlapping conflict but the issue has not been solved.

Here's my apachectl -t -D DUMP_VHOSTS:

VirtualHost configuration:
*:443                  nucleuswealth.com (/etc/apache2/sites-enabled/wordpress-le-ssl.conf:2)
*:80                   nucleuswealth.com (/etc/apache2/sites-enabled/wordpress-le-ssl.conf:42)

Error message:

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Processing /etc/letsencrypt/renewal/nucleuswealth.com.conf
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Renewing an existing certificate for nucleuswealth.com

Certbot failed to authenticate some domains (authenticator: webroot). The Certificate Authority reported these problems:
  Domain: nucleuswealth.com
  Type:   connection
  Detail: 52.63.10.5: Fetching http://nucleuswealth.com/.well-known/acme-challenge/W7hk1NJgRh6BNE9t0lcTaGaNRhSubTggjHPWToZGBd0: Connection refused

Hint: The Certificate Authority failed to download the temporary challenge files created by Certbot. Ensure that the listed domains serve their content from the provided --webroot-path/-w and that files created there can be downloaded from the internet.

Failed to renew certificate nucleuswealth.com with error: Some challenges have failed.

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All renewals failed. The following certificates could not be renewed:
  /etc/letsencrypt/live/nucleuswealth.com/fullchain.pem (failure)
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1 renew failure(s), 0 parse failure(s)
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.