Slider on mobile site isn't working

I am using Bristo theme and the home page slider isn’t showing on the mobile site. Would appreciate your help with this please. The website is

Thanks in advance.

Guys, I played around a bit more and have figured out the solution. Don’t go for “Responsive Slider”. Here is what you need to do:

Please go to your DashboardAppearanceCustomizeHeader areaHeader type → select Full screen slider for Front page header type → click Save & Publish button.