It looks like you have a .xxx website. To activate a .xxx, you will need to register with the central registry and input your membership ID in your account.
How do I obtain and add my Membership ID to my .XXX domain?
The central registry for .XXX requires registrants to be members of the Sponsored Community in order for their .XXX domains to resolve. You can still register .XXX domains without a member ID, but Membership is necessary before you can use the domain.
Membership Application Process: The membership application is an automated process. .XXX domain owners will receive a membership invitation to the email address provided in the Whois information; The membership invitation email is sent by the registry within 24 hours after your domain name is registered. The FROM email address sending the invitation is "[email protected]".
Please be sure to whitelist that address in your email server so the invitation does not appear in your SPAM folder. Membership takes less than 3 minutes to complete. For an overview of the process, please see more here. You can always request a Membership Invite from this page and choose "Request Application".
To add your Membership ID to your .XXX domain, please follow these steps: