Serious question: You put Cloudflare between all your domains and all your visitors without looking in to how this would affect your site's reachability? If so, that's interesting, considering that many people in this community are negatively affected by Cloudflare because they're using Linux and/or some less than mainstream browser.
You might want to read some threads on here about Cloudflare.
You might want to read some threads on here about Cloudflare.