Changing Name Servers

Hi,

I installed an ABXD forum on the file manager. My domain is youmemario.net 6. But, when I click it it doesn’t work, even when I got an email that is was active. It says that I need to change the nameservers. How do I do this when using this server?

Please help.

I didn't find the right solution from the Internet.

References:-
https://bit.ly/2FGss3E
Creative advertising studio

Thanks