Cannot activate Lightbox

Hi, nothing happens after i activate the plugin.
I click on images it just brings me to the image instead of displaying it in a modal.

Below is a page to my site.
http://gratenews.com/style/moschino-capsule-collection-barbie/

I have it working previously, but now it is no longer working.

https://ww.wp.xz.cn/plugins/simple-lightbox/