I am not seeing any 404 errors when visiting your site. I have checked all links on your site and they all bring up pages.
You may want to clear your browser cache to see if that is causing the issue. If not, please let us know any specific URLs you are having issues with.
I also checked and see a single subdomain on your cpanel, however that subdomain points to a folder that does not exist. You may want to recreate that folder if you have a website publishing to it. You can do that via your cpanel File Manager.
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