SSL certificates cannot be changed from one domain name type to another after purchase or issuance. If your order was placed within seven calendar days, request a refund and purchase a new wildcard certificate. For eligibility details and the refund process, see Refund policies.
Before switching: confirm you need a wildcard certificate
Switch to a wildcard certificate if you:
Need to secure multiple subdomains under the same domain
Plan to add new subdomains frequently
Want to manage fewer certificates
If you only need to secure one domain or a small, fixed set of subdomains, a single-domain certificate is likely sufficient.
Next steps
After your refund is approved:
Purchase a new wildcard certificate from SSL Certificates Service.
Submit a certificate application with your wildcard domain (for example,
*.example.com).Complete domain ownership verification and wait for the certificate to be issued.
Install the new certificate on your server.