ERR_CONNECTION_TIMED_OUT when connecting to some sites

What is the name of the domain?

https://schneegans.de/windows/unattend-generator/

What is the error message?

ERR_CONNECTION_TIMED_OUT

What is the issue you’re encountering

hi, when using dns from cloudflare i can’t access the site, but when i use provider dns everything is fine

What are the steps to reproduce the issue?

just open site

Cannot reproduce. Works fine over HTTPS, despite isn’t using Cloudflare nameservers anymore.