Scroll issue on theme

Hi I’ve just installed your great looking plugin but when I enable it I can’t use the mouse wheel to scroll down.. If I scroll down using the broser bar when I continue with the wheel it keeps going backyup.

Everything works fine if I disable the plugin.

Could you please help me out:
http://www.gestionecondominio.org

Thanks Daniele (Rome-Italy)

https://wordpress.org/plugins/polaroid-gallery/