Assuming that you have registered the domain (either with Eco Web Hosting or externally) and the domain is pointing to our nameservers.....
ns1.eco-dns.co.uk
ns2.eco-dns.co.uk
ns3.eco-dns.co.uk
ns4.eco-dns.co.uk
You will need to make a small change to the site configuration in order to remove stackstaging from the site URL. To do this login to the wp-admin backend for the site and then go to
Settings > General:
From the subsequent page you can then update the two URL's to remove the stackstaging address and your Wordpress site will then load on the domain name:
*** The first part of the temporary address will have the domain with a dash (mctesting-uk in this case). Make sure to change to a period (eg. mctesting.uk) when also removing the stackstaging section so the domain resolves correctly. ***