advanced slider for many slide not working

Hi there!
Thanks for the amazing Plugin! really beautiful and crazy effect!

I am new to wordpress and I build my site locally. I discover your very good plugin and I try to use advanced slider. I add 2 or 3 items in the content section but it does’nt work (I adjust “slide to scroll”). All settings and effects work but just for the first slide. It’s like my other slides doesn’t exist.
Thanks in advance for your help.