What are the potential causes of a website blocking in Firefox when using Cloudflare?

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Grade: Education Subject: Support
What are the potential causes of a website blocking in Firefox when using Cloudflare?
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Several factors can cause a website to be blocked. Common reasons include Cloudflare's security settings (e.g., aggressive firewall rules), conflicting browser extensions, outdated Firefox versions, and issues with the website's own configuration. A misconfigured firewall or WAF on Cloudflare is a frequent culprit.