Reposts are allowed through after 8 hours if a story hasn't had significant attention yet. After that, we treat reposts as dupes for a year or so. This is in the FAQ: https://news.ycombinator.com/newsfaq.html.

This is on purpose, because we want good stories to get multiple chances at getting noticed. Otherwise there's too much randomness in what gets traction.

Plenty of past explanations here:

https://hn.algolia.com/?dateRange=all&page=0&prefix=true&que...

look at the timelines again... https://hn.algolia.com/?q=research+goblin

The 8 hours seem not to count if you submit under a different domain or do they reset after each try?

Would also be great if you would answer emails especially if they are related to GDPR. You have two of them in your inbox from over 6 months ago send from the email in my account.