Issue with POST API showing correct response and correct columns but no content

I was able to configure the endpoint correctly in the query connector using this very helpful post for guidance.

 

I get the expected response, just like in Postman:

Columns are correctly identified:

 

But the data preview shows columns with no content:

What am missing? Must be at the 3rd step Response Configuration? But I don’t see much settings there…

Anyone else ran into that issue? Any help appreciated…