Sorry to hear of the problem you are having.
This can be due to plugin conflict on your site so please try temporary deactivating all plugins except Unyson and rev solider plugins and see whether everything works fine and then enable the plugins one by one to see which plugin is conflicting if any.
Could you please share me your site URL where it’s happening so that i can troubleshoot it?
I could confirm the issue on your shared site but it is working fine on our site https://jevelin.shufflehound.com/
Please make sure you have configured the slider to display on mobile devices by referring the information shared on the following pages.
Also you can test it by creating new test slider and temporary using it.