Incorrect error message in admin

In admin I see the error message:

The nameservers set on this domain are incorrect. They are currently [Not Set]. Use your domain name registrar's
			control panel to set the nameservers to ns1.box.linki.tools; ns2.box.linki.tools.```

However this is not true. It is set:

$ nslookup -type=ns linkitools.com
Server:         192.168.178.1
Address:        192.168.178.1#53

Non-authoritative answer:
linkitools.com  nameserver = ns1.box.linki.tools.
linkitools.com  nameserver = ns2.box.linki.tools.

Authoritative answers can be found from:

What’s going on?