It looks like it had been deleted (likely by the author). You can message the author and ask them why. I was able to see it because I'm an administrator. I apologize for the confusion.
We will also look into a better message when content has been removed. A 404 is not very helpful.
Thanks,
Daniel
Hi,
Do you mean this link?
https://seekingalpha.com/instablog/3646631-anthony-cataldo/5092364-lottery-ticket-stock-portfolio-306-percent-2017
Works fine for me. Please let us know.