We're sorry to hear that you're having difficulties with LayerSlider. However we can assure you that the item is working and functioning properly as it is used on hundreds of thousands of websites without any problem.
The plugin does support CSS styling in external files. Please note that certain CSS properties must be applied on inline elements, simply because it's basically impossible to only work with properties from external CSS files. However many properties can still be used that way, for example color, bg color, etc.
There are no known issues or bugs in the current release of the item. As you did not specify the problem you are experiencing we cannot provide a solution. However our support team is available and ready to help you with this matter.
As we can see you did not contact us in any way so far. We kindly ask you to get in touch with our support team so we can help you resolve the problem.
To do that, please open a ticket in our new support center on the following URL as we can only provide help there: https://kreatura.ticksy.com/ We're looking forward hearing from you.
If this solution would change your mind about the plugin, please consider changing your rating - that would mean a lot to us.