Ad Inserter not working with “Card Type – Native Shopping Ad”

Hi, I have a site that I want to display Amazon “Native shopping ads” on this front page. If you go to my site you will see that I have image links below each paragraph that displays the item I want. This can be done with the “Text+Image Link to this Page” without any problems. But when I try to get “Card Type – Native Shopping Ad” it will not display. HELP!
I have tried on other sites and on a fresh site with no plugins. What am I not doing or doing wrong? My Amazon Affiliate account is OK and working fine. Thanks for your help, Janek

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


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