Hello Francesco,

Thank you for getting in touch with us. My name is Attila and I'm happy to assist you today. I appreciate your patience while we've been working towards your ticket.

What exactly is the problem with the installation ? Please describe the issue you are experiencing in more details. 

Also, you can find detaled installation instructions in the documentation, please refer to the following URL: https://support.kreaturamedia.com/docs/layersliderwp/documentation.html#plugin-setup