I found your website and your domain name was not configured correctly so I removed this for now and you can access your website here: http://kcaunited.iclanweb ... sites.com/.
It is 100% possible to use any domain registrar with our websites. All you need to do is setup the domain name from the registrars side.
For Premium Customers
We recommend you use our DNS servers, so we can manage your records for you. First, visit your Admin Panel > Menu > DNS Manager. Enter your domain name. If you know you have additional DNS records for other services such as email, then enter them here too. Press the save button.
Then, change your DNS name servers (this is done through your registrar) to:
Your domain name will become active within a few hours.
Thank you! Let us know how it goes.