I'm trying to add a domain to a wordpress site. Now, it won't allow me to add the domain under the settings, as they say I must first do a DNS update. But the DNS update has been requested twice and rejected twice.

How do I do this?

rejected by your host?

This is the message we get

No Nameservers found for "dikwiel.co.za

But that's the nameservers that Wordpress provide

Have you gone into your domain registrar and set up nameservers?