Problems with layerslider

Hello,
First of all thank you all for the product “enfold” :)
I’ve just bought it yesterday, and still trying to figure out what to do / what not to.
So lets say I’m quite beginner here.

I wanted to import “enfold 2017” demo and start walking from that design.
But somehow it wasn’t very similiar to what I’ve seen on demo pages. ( Enfold 2017 was the reason i wanted to buy that theme.)

Anyway, I’ve tried a few other themes. Some of them did work well, some didn’t.
What I figured out ( unsurely ) was that “LayerSlider” thing (is that a plugin i need to install? coultn’t find it anywhere.) is not working as expected.
Soooo I’m very curious to fix that :)

Thanks,

(right now it doesnt even import and activate enfold 2017 after i tried other demos)