It got quite a few upvotes in the first few minutes and some constructive comments. However, it seems the someone decided that it should not be displayed and it is now marked as flagged.
Could you explain why?
[1] https://news.ycombinator.com/item?id=22793171
[2] https://www.covidodds.com/
Maybe you've fixed all the issues raised, maybe not, but that's my guess as to why HN readers flagged your post.
If enough readers "flag" it, the article gets labeled "[flagged]" and removed from the front page.
More details here: https://news.ycombinator.com/item?id=12173809
Also the other points brought up here and there.