What kind of HTTPS error? Can you provide some more details?
Edit: It looks like you configured some redirects to HTTPS on your site. You’ll need to undo those if you’re not going to serve the site under SSL anymore. Possibly, you’ll need to edit some Wordpress settings.
“theclinchers.com uses an invalid security certificate. The certificate is only valid for the following names: *.webhostbox.net, webhostbox.net Error code: SSL_ERROR_BAD_CERT_DOMAIN”
on the new server the installation is completely fresh and different, nothing from the old site.
Maybe but the server that is performing the redirect is not apache but nginx, nginx server is redirecting your domain to https://theclinchers.com/index.php?page_id=10255 :
$ curl -IkL theclinchers.com
HTTP/1.1 302 Moved Temporarily
Server: nginx/1.12.0
Date: Sun, 21 May 2017 11:02:28 GMT
Content-Type: text/html; charset=UTF-8
Connection: keep-alive
Location: https://theclinchers.com/index.php?page_id=10255
HTTP/1.1 302 Moved Temporarily
Date: Sun, 21 May 2017 11:02:28 GMT
Server: Apache
Location: /404.html
Content-Type: text/html; charset=UTF-8
HTTP/1.1 200 OK
Date: Sun, 21 May 2017 11:02:29 GMT
Server: Apache
Last-Modified: Thu, 20 Oct 2016 17:06:50 GMT
Accept-Ranges: bytes
Content-Length: 11812
Content-Type: text/html
You shoud double check how your domain is configured.