1020 error useful answer

While visiting a site protected by Cloudflare, error 1020 “Access denied (Error: 1020)” indicates you’ve violated a Firewall Rule. When this happens, you’ll see the error “Access Denied (Error: 1020)” and your request was blocked by the filter based Firewall rule on the site. If you’re the site owner, you can find the requests that was blocked by the Firewall on the Firewall page under the Events menu. See this CommunityTip for suggestions to avoid this error,

I guess the only option is to contact them how you contact them normally as long as that is not via their site (phone, email). Only the site owner knows why you’re blocked and only they can change that.

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