WP Fastest Cache is totally compatible with Cloudflare. In order to minimize potential conflicts, you need to Cloudflare cdn integration.
You can enable Leverage Browser Caching on the settings page of WP Fastest Cache but if you are using Cloudflare, you need to enable Leverage Browser Caching on Cloudflare. Continue reading
If the hotlink protection of Cloudflare has been enabled, the image optimization feature does not work. In this case, you need to disable the following features of Cloudlare. Continue reading
If you see such warning, it means that the ip of your site has been banned from CloudFlare so you need to make trust the ip of your site.