I was able to find your site, and so I’ve done a bit more research.
So far, this is not an IP address issue. Your registration worked fine, but there has been no CDN created yet. You should be able to reset the WP Godspeed plugin within WordPress using this link:
/wp-admin/admin.php?page=wp-godspeed-setup&reset=true
This will reset the plugin back to its newly installed state. Then from there, you can re-register and start the CDN setup one more time.
Please reply here if you continue to have any trouble getting setup.