Just installed, Grid Items not displaying

I installed the GridPlus plugin. Set datasource to posts category “Pendants”. I made 2 posts with category Pendants. I put [grid_plus name=”Pendants”] in shortcode on the Test page. On the GridPlus page, Datasource tab, categories entry: I see Pendants(2). So it appears to find the 2 Pendants posts. But the test page doesn’t display the posts in a grid, just a lot of blank space.

Ideas?

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