CloudFlare Security

Hi avast Team, i just wanna ask about this cloudflare security, Im visiting to this website constantly, and this cloudflare security is blocking the site first https://www.cloudflare.com/features-security, The CloudFlare says on it that “to prevent this to appear in the future, make sure u scan your device / laptop / pc for potential malware” i scanned my laptop many times, no malware, why is this cloudflare keep popping out when i visit this website. tnx in advance avast team