Hello, @nmatricn,
Please set the slider from the “Layout options” first then to hide it from the mobile devices go to the Dashboard >> XSTORE >> Theme Options >> Theme Custom CSS see here: https://postimg.cc/rdDgcp5n and then paste the below code there.
@media(max-width:768px){
rs-fullwidth-wrap#rev_slider_1_1_forcefullwidth{display:none !important;}}
Then save settings and check back to your site after clearing the browser cache.
Regards 8Themes Team.