Even though under network settings in Cloudflare the http/3 option is enabled when I check my domain it is doesn’t support http/3 as you can see here: https://gringo.co.il/cdn-cgi/trace.
What is more weird is that I have 2 subdomains and one supports http/3 and the other isn’t.
What should I do in order they both will support http/3 and why there is a difference between them?
This is odd. I will note that I can reproduce it here though, I only get https/2 whereas I get http/3 on other Cloudflare sites. Nonetheless, it is offering h3: