Attribute images not showing

I’ve checked every panel in the settings and I can’t figure out why the attributes are only showing as checkboxes and not images like you have in the demo. I checked the documentation and it’s not clear, and I know it’s not only for Pro version because it’s not listed so what am I doing wrong? How do I show the images that are added for the attributes, and not the labels? All I see in the Structure dropdown choices are Radio, Checkbox, Dropdown, Multi dropdown. I’ve tried all 4 of these and none of them look like the demo.

And in the Additional Options, Labels are set to NO (so they are not supposed to be shown).

I tested this with 2 default WordPress themes and it’s the same.