Remember it can take up to 72 hours for DNS propergation, so it might take a little while for your site to be visible if you’ve only receently set it up
For the “Kind of” above, I can see an error 500 when I go to your site “500 Error, please check your php script / enable display_errors in your cpanel”
This link will help you get the real error, and help fix it. If you need help fixing the error itself, you can post here again with the error message