Some new user's questions

hi,when i use Kreo theme,there are many questions. Maybe because I’m not familiar with this theme.thank you for reply.

1.how to change the animation of Portfolio Overview Types? theme options-Portfolio options？but animation is not work，why？

2.LayerSlider_Kreo_Freelance.zip , how to import it? In slider revolution? why displayed “importing slider settings and data…Error: slider_export.txt does not exist!”？ i want up to this effect https://themes.ishyoboy.com/kreo/freelance/home-layer-slider/

3.how to change portfolio overview’s numbers in row，now is three