Your domain name and your hosting seems to be working just fine. But you do need to your domain name manager and lock your domain name.
When you set up a new domain name, or redirect it to new name servers, it can take up to 72 hours before all of the domain name servers on the internet expire their current data and request new data. Until your internet connection catches up, put your URL into a browser and force a couple of browser refreshes (F5 or Ctrl-R). This will force your browser to update it's cache with current data from the internet. If it's working for me it should be working for you soon. Exactly how soon, is impossible to say.
