Hi,
Thanks for the site URL.
To make your site as per demo https://www.ovationthemes.com/demos/beauty-salon/ please refer below to the documentation for a better understanding.
Please take backup of your site if any data is available before activating our premium theme.
Here is the link of the documentation: https://ovationthemes.com/docs/ot-beauty-salon-pro-doc/
We hope this gives you the information you need.
Please let us know if you need anything further and we would be happy to help.
Many Thanks