There are no items to show – GN Publisher

I’ve a problem with the GN Publisher feed. My posts display on the Publisher Center, but in my public profile on Google News don’t.

I make the test on Feed Validation: https://validator.w3.org/feed/check.cgi?url=https%3A%2F%2Fwww.fitsse.com%2Ffeed%2Fgn

But the error persists.

Anyone has the solution?

The page I need help with: [log in to see the link]