instructions how to install the dat file too, how to import demo to my site.

Hello ,

If you can provide me complete instructions how to import demo data to my site i would be a satisfied customer please.
Here is alternatives method to import demo

1. Extract the downloaded zip file, there will be 3 files with extension xml, wie and dat
2. Import xml file using WordPress Importer ( https://wordpress.org/plugins/wordpress-importer/ )
3. Import wie file using Widget Importer & Exporter ( https://wordpress.org/plugins/widget-importer-exporter/ )
4. Import dat file using Customizer Export/Import ( https://wordpress.org/plugins/customizer-export-import/ )

Uploading Zip…
Unzipping File…
Invalid ZIP destination file /home/splurgemall/public_html/wp-content/uploads/acme-demo-importer/online-shop-pro
xml file not included
wie file not included
dat file not included

i need better instructions on how to install the dat file too…..