The problem appears to be the domain itself [1] as most submissions are auto [dead] as of 2018. Enable showdead in your profile to see them.

In those cases all one can do is email Daniel dang hn@ycombinator.com or avoid submitting that domain.

[1] - https://news.ycombinator.com/from?site=invidelabs.com

Do you have “showdead”=yes in your personal settings?

The last link you shared is flagged as dead.