Tiled Mosaic Not Showing Correctly.

Hello folks.

I’m using the Summit Lite theme and whenever I try to put a tiled mosaic gallery into a post/ page it appears really small. I’ve tried contacting the Summit Lite support but with no luck. Was hoping someone here might be able to help?

Here’s an example of how the gallery appears – https://bookofjourneys.org/gallery-testt/

https://www.ads-software.com/plugins/jetpack/