You add domain in WebsitePanel, update domain dns but domain is not active after 24 hours.

Possible reason is you forget to enable dns service.

Instruction to fix error:

+ Login WebsitePanel, go to hosting plan and tick DNS checkbox in hosting plan resource.

+ Go to Hosting space -> Domains

+ Select your-domain.com which will bring up management page with dns option.

+ Then Enable dns for your-domain.com