I see you only signed up today.
The page you see is probably caused by the time it takes for domain changes to "propagate" across the internet, and x10s networks. These are usually sorted within 48 hours, but it can be longer sometimes. I suggest you wait a day or two, and see if the error corrects itself.
Also, each time you try (maybe once an hour or something) you may want to clear your cache and flush your DNS. (There's no point in doing this if you're sitting there refreshing the page).
If the error is still showing in 48 hours, please post back and someone will investigate further.
Thanks for your patience,
-stpvoice.