slider doesn't work static page

Hi,

I am using simplemag as a theme and i would love to have a static front page. But whenever I use my new home (page with section latests post), I can’t get the slider to appear. No mather what box i tick in the post itself (add to homepage slider, add to category slider), it won’t work. I feel like I am forgetting something. I did exactly what I am suppose to do when installing the static page, but it just won’t appear on the front page.

PLEASEEE help me cause I am pretty close to crying.

Thank you so much
https://www.neverfadingbird.com is my website