Were you able to get your issue with the nameserver change worked out? There could be several reasons why you were having problems.
The first may be the browser itself. Please cleat your cache and try taking these steps in a private/Incognito browsing window.
You may also not be entering valid nameservers for the domain itself. Certain CCTLDs require preregistering the nameservers or using specific ones on the domain. If you have a Country-Code domain, you can place "About .XYZ domains" (replacing "XYZ" with your actual country code) in the search field of our help section to get more information on nameserver requirements.
TLH - GoDaddy | Community Moderator Supporting you at x.co/247support