You can activate Cloudflare from the CPanel.
There is a Cloudflare option and if you click on that you will see a dropdown and a button written: "Alter Cloudflare" or something like that. Click on that option and verify your email address.
As for SSL, there is an SSL feature in Cloudflare, after you verify your email from Cloudflare. Activate the SSL from inside the Cloudflare.
Hope that helps.
