A new domain name that has just been registered is not immediately known on the Internet by all the other servers. It takes up to 24 hours before every server on the internet knows about your new domain name. We call this DNS propagation. Once this process is complete and all servers know about your domain name, if the domain name is properly linked your website and email should work correctly. Have you not yet linked your domain to a web hosting package? Then you can easily create a ticket so we can help you out!
You really can't figure it out? Don't worry and contact the helpdesk! You can do this via the live chat or by creating a ticket!