Congratulations you have now added a new domain to your control panel!
Due to a process known as 'DNS Propagation' it may take upto 76 hours before the domain name works globally.
Until DNS has fully propagated the sitebuilder may not work, also browsing to the domain may not work. Usually rebooting your computer and router will clear your local DNS cache.
Please do not create a support ticket for a domain that has been added within the 76 hour period, 99% of domain issues will be resolved by waiting this period of time.