The free version of WooRewards can be obtained in multiple ways :
1 – From your WordPress administration
In your WordPress administration, go to Plugins → New. Use the research input to search for “WooRewards” and wait for the result to show. Once you see the plugin, click on Install, wait a few seconds and click on Activate.
2 – From the WordPress.org website
Go to the WooRewards plugin page and download the plugin. In your WordPress administration, go to Plugins → Add → Upload Plugin. Select the zip file you downloaded before. Click on Install, and when it’s done, click on Activate.