This article addresses SSL verification for customer domains added through a Cloudflare Hosting Partner.
To receive an SSL certificate, proxy traffic through Cloudflare. The SSL certificate will be automatically issued within a few minutes.
Pausing Cloudflare or disabling the proxy will prevent SSL certificate provisioning
Currently, HTTP is the only officially supported domain validation method for SSL certificates for domains on a partial setup activated via a hosting provider. Cloudflare will add DNS as an alternative validation method (DCV) at a later date.
If you would like to complete validation using HTTP without proxying through Cloudflare, this is accomplished via the Cloudflare API. Reach out to partnersupport@cloudflare.com if you need assistance.