Hi, Emanuelle!
I think I found the way to solve that without Layer Slider…
Instead of the Layer Slider please try next:
1. Install the recommended plugin called “Gold addons for Elementor”
also, install and Activate the “Image projector” plugin.
2.Edit your home page with the Elementor,
3. Insert the (GA) Image Carousel element, then Insert the images in it and change the settings per your needs.
4. Disable the Layer Slider from the “Agama options” meta box.
Now, when you click on the image, you have the option to zoom it.
Please see the video I made for you:
https://mega.nz/#!kQBAHC4C!KCWpqnfSqEjkSPRNGXwkuIN-ytOqqFu71f47E93Ffik
Regards