Getting Domain Uses Unsupported Protocol & error

The ERR_SSL_VERSION_OR_CIPHER_MISMATCH error indicates a problem with the SSL connection between your browser and whatever it connects to (be that our server or Cloudflare). If it was connected to Cloudflare, that probably meant that Cloudflare hadn’t setup the SSL certificate for your domain yet. Cloudflare can take up to 24 hours to activate the SSL certificate for your website.

Regardless, that issue is between you and Cloudflare. When using Cloudflare’s proxy, the SSL certificate presented to browsers is managed by Cloudflare, we have no control over that.