compatible with wp canvas-gallery?

Hi I have installed Magnific Popup lightbox but it does not appear to work, not sure what to tweek or disable as i am using it with wp canvas-gallery which offers a nice Masonry Style & Caption Hover but no lightbox and on the wp forum someone said it would work… the javascript does appear in the footer, do i need to add an extra div around the gallery?
link to page
https://www.sintra-garden-studio.com/wordpress/students-work/
thank you in advance
Melanie

https://www.ads-software.com/plugins/iw-magnific-popup/