Yes, it is possible to request a new validation application for a site that was previously denied.
A re-application is appropriate and will be considered under several specific circumstances, including but not limited to:
Increased Traffic Volume: The site's audience has verifiably increased to meet or exceed the minimum traffic prerequisites that were not met at the time of the initial application.
Content Remediation: The content, sections, or user experience elements that were identified as non-compliant with our guidelines and resulted in the initial refusal have been substantially corrected, updated, or permanently removed.
Technical Platform Migration: The website has been migrated to a new platform or Content Management System (CMS) that now fully supports the technical integration of advertising scripts, whereas the previous platform did not.