Hello,
It's about this page: https://kiwiirc.com/docs/installing/proxies

I have a IRC server & KiwiIRC on the same machine, but when I enable Cloudflare on my subdomain.domain.com - the client can't connect, also mIRC

It's possible to fix it ?

Thank you

No, you can't use cloudflare on the same domain as your irc server.

Ok thank you