Gallery doesn’t display

Hi,

I’d love to use the Everest Gallery but I cannot get the shortcode to work (while it works for Envira for example). Am I overlooking something in the settings. I was using the Gridsby theme and set up the page as page width. Gallery also doesn’t display in preview.

If someone has any pointers it’d be muchc appreciated!

Thanks

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