Grid layout impossible to apply to a collection list

https://preview.webflow.com/preview/culture-first?utm_medium=preview_link&utm_source=designer&utm_content=culture-first&preview=4a0e7903e21d0961b405b9c15ce18724&workflow=preview

Hi all, it seems a lot of us are having issues with CSS grid layouts for collection lists. We have an Instagram block at the bottom of the homepage and would like the design to be 2 columns grid for mobile view (horizontal and vertical).

When we try to apply a grid layout to the instagram feeds collection list, the first element is called “Area” and is empty. Could you help ? Many thx !!