Your domain is pointing to our nameservers, but it seems like the DNS records for the non-www version were corrupted. Can you please disable Cloudflare integration for your domain, remove and re-add the domain from the “Addon Domains” section of the Control Panel, then upload the website files on yourdomain/htdocs, overwriting yourdomain with your domain, with a FTP client, and then re-enable Cloudflare integration for your domain?
Do you use Cloudflare with Flexible SSL? That’s known to cause redirect issues. @Ergastolator1 wrote some instructions about how to fix this some time ago:
I don’t use Cloudflare with Flexible SSL, what I did was delete my domain from the control panel and add it again, now it works great thank you very much for your support!