Per your link...

> block http 1.1, real users only use 2.0

Chrome on android and Firefox on linux both appear to use 1.1 still...

Your site does not currently seem to be reachable / responsive when I try to reach it from a US Comcast IPv4 address - you are not advertising IPv6.

Edit / Update: It was Apple's Private browsing mode that causes it not to respond. I can now see it when this is disabled.