Hi Nicolas,

try playing with the number of visible items at one time on different resolutions in /js/scripts.js

$('.carousel').owlCarousel({
loop:true,
margin:20,
autoHeight:false,
navSpeed: 600,
nav:true,
responsive:{
    0 : {
        items:1
    },
   479:{
       items:2
    },
   1024:{
        items:3
   },
   1466:{
      items:3
   }
}
});

a complete list of the carousel options:

https://owlcarousel2.github.io/OwlCarousel2/docs/api-options.html

hard refresh the page after making the cjhanges (Ctrl+F5)

Just checked you js/scripts.js file and it seems you haven't made any changes:

https://d.pr/free/i/jjClr0

Please replace it with:

            $('.carousel').owlCarousel({
			loop:true,
			margin:20,
			autoHeight:false,
			navSpeed: 600,
			nav:true,
			responsive:{
				0:{
					items:1
				},
				479:{
					items:2
				},
				1024:{
					items:2
				},
				1466:{
					items:2
				}
			}
		});