If you're having trouble changing LayerSlider slider settings that looks like this
This is most likely a conflict between the YITH Ajax Search and YITH Wishlist plugins.
This is what we recommend:
Go to Plugins -> Installed Plugins
Deactivate YITH Ajax Search and YITH Wishlist
Go back into LayerSlider and you should see everything now works
Once you've finished making your changes you can reactivate the 2 YITH plugins.