Gallery Shortcode

HI There,
I’m using gallery shortcode to replicate a gallery on multiple pages, however, once I update the main gallery the other ones are not updating with the new changes. I’ve cleared my cache and still not showing the updates. Any idea of what could be happening?

Thanks.

main gallery: https://rentfluff.com/gallery/
pages using the same gallery: https://rentfluff.com/about/fluffians-gallery/
and all the individual staff pages, You’ll see mitchell’s photo looks different from the one on the main gallery page.