There are a few reasons why you may not be seeing statistics in your Cloudflare stats:
2. If you signed up directly for Cloudflare, your nameservers are not pointing to us at your registrar just yet (registrars can take 24-72 hours to change the nameservers to ours). Stats will not start gathering until we detect the nameservers pointing to us.
3. If you signed up through a Cloudflare hosting partner's panel option, something is not configured correctly.
4. Some browser extensions designed to block ads may prevent the analytics from loading. Disabling the extension or whitelisting Cloudflare.com should remove this possibility.
Note: Activations through a hosting partner works via a CNAME on the www record. If most of your traffic actually goes to domain.com, you would want to set a forward from domain.com to www.domain.com.