“Sorry, the website cannot be found”

Please provide a link to a page on your site where we can see this. Thanks.

https://www.mullenauxconsulting.com/wp-admin/

This is not a wordpress problem. You have not registered an address for your domain:

https://www.mullenauxconsulting.com’s server DNS address could not be found.

Nor does it appear that the domain has been registered:

 whois mullenauxconsulting.com
[Querying whois.verisign-grs.com]
[whois.verisign-grs.com]

Whois Server Version 2.0

Domain names in the .com and .net domains can now be registered
with many different competing registrars. Go to https://www.internic.net
for detailed information.

No match for domain "MULLENAUXCONSULTING.COM".
>>> Last update of whois database: 2017-07-17T20:50:06Z <<<