Methods
Before a certificate authority (CA) will issue a certificate for a domain, the requester must prove they have control over that domain. This process is known as domain control validation (DCV).
For details on each method available for DCV, refer to the following resources:
To verify the DCV status of a certificate, either monitor the certificate's status in the dashboard at SSL/TLS > Edge Certificates or use the Verification Status endpoint.
A status of active means that the certificate has been deployed to Cloudflare’s global network and will be served as soon as HTTP traffic is proxied to Cloudflare.
You cannot update the DCV method for an active certificate. To update the DCV method for a subdomain, wait until the DCV expires and then change the DCV method.