I had reported same issue earlier, that was a text post- https://news.ycombinator.com/item?id=46044804
Am I missing something? Who can help fix this?
The last link you shared is flagged as dead.
In those cases all one can do is email Daniel dang hn@ycombinator.com or avoid submitting that domain. It is possible that you may never see a response as he gets buried in requests to remove auto-dead for many domains.