Cloudflare is causing SSL error on just one subdomain

My subdomain will not load with Cloudflare domain connected. I get an (ERR_SSL_PROTOCOL_ERROR) error. The weird thing is the primary domain loads fine.

The subdomain also loads fine when i remove the domain and revert to the Cloudways default.

Somehow, Cloudflare is corrupting my site.

What is your subdomain?

I figured it out. Spectrum internet determined there were “inconsistent signals” to just this one site so it flagged it as malicious. So ridiculous.