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To make your site as per demo https://www.ovationthemes.com/demos/organic-farm/, 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 documentation link: https://ovationthemes.com/docs/ot-organic-farm-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.