Can I change my navigation buttons?

Yes, there is inbuilt library of navigation buttons so you can choose navigation button of your choice from Navigation button Library from admin side.

I want to change loader, How it possible?

Avaratan Slider Lite version providing 6 default loaders under “Loader” Panel. You can upload your loaders with pro version of plugin.

Can I duplicate my slider elements and sliders?

You can only duplicate your slider elements. If you want to duplicate your whole slider then you have to purchase pro version of slider.

Can I add “Call to action” functionality with slider elements?

Yes, you can reach with this functionality via adding a links on slider elements.