Changed nameserver but still showing me no domain in create account

I have changed all the name points and still in create account section its popping up that please use your domain…
Please Help Me!

When did you change your nameservers? Note that it can take a few hours for DNS changes to become effective.

If it still doesn’t work after 6 hours, can you please state your domain name? It’s very hard to check why a domain cannot be registered if we don’t know the domain.