For anyone reading this who desperately needs their website up, you can try this: If you manage to get to your Cloudflare DNS settings and disable the "Proxy status (Proxied)" feature (the orange cloud), it should start working again.
Be aware that this change has a few immediate implications:
- SSL/TLS: You will likely lose your Cloudflare-provided SSL certificate. Your site will only work if your origin server has its own valid certificate.
- Security & Performance: You will lose the performance benefits (caching, minification, global edge network) and security protections (DDoS mitigation, WAF) that Cloudflare provides.