Hello,
First of all, enter the editing mode of the page and see if it is the Slider Revolution displayed. Check which one is used as shown here: http://prntscr.com/isshej
Then find this slider in the Slider Revolution plugin as shown: http://prntscr.com/issi0h
Enter the slide and check the layer.
If it is not a slider just remove the element in the row.
Best Regards