Yeah for connecting btcpay server

Even if Start9 did support clearnet, you wouldn't. You would use the cloudflare proxy service so you don't expose your home IP. Your only alternative would be to use a data center.

So, if you're going to proxy through cloudflare, you may be as well just use a vpn tunnel for the proxy and then you won't have to worry exposing anything personal.

And I can vouch for the cloudflare ddos protection. It works.