I recently added a site to Cloudflare. In the confirmation/welcome e-mail, there is a link to “Analytics”. Following this returns a 404 on the Cloudflare site as it adds an additional “/” - for me it linked to
Congratulations! You have successfully activated [website name]. Your site will now receive the benefits of Cloudflare’s performance, security and reliability features. Check out reports of bandwidth saved* and threats blocked on your account Analytics page.