Fix Cloudflare 1015 Error Permanently

I keep hitting the Cloudflare 1015 “rate-limited” error across every site I maintain, including our developer instances, and I need a clean, lasting fix that does NOT rely on rotating proxies or other work-arounds that might break later... (Budget: ₹37500 - ₹75000 INR, Jobs: API, Cloudflare, Linux, Network Administration, PHP, SEO, Ubuntu, Web Security)