How to set up custom domain

Hi there, I basicly dont know anything about domains.
Could someone tell me how i get a custom domain to work?
I bought the domain on, there i changed the Nameserver to the three of dynv6. In “My Domains” the status is delegated and details says that the results are valid.
But it doesnt work. Are there any special dns-settings that i should set on Or do I even need the dns-service of
I got it working with a adress, but not with my own domain.
Thanks in advance :slight_smile: