layers not showing

Hi,

I’m using a Masterslider on my page: http://zeester.com/zeegalm/nl
Yet it’s only showing the background images and not the layers?

I created a new slider from scratch, and imported one as well. Yet same problem: on none of the sliders there are layers shown.

I upgraded masterslider to the latest version, but the problem remains.

Do you know how this is possible?

THanks

Tomas

https://ww.wp.xz.cn/plugins/master-slider/