If your website is a WordPress site, you'll need to ensure that you've also installed the WordPress plugin, to have your Review Widget display properly.
1. Log into your Whitespark account - https://accounts.whitespark.ca/sign-in - and launch Reputation Builder
2. Click Publish > Review Widget
3. Ensure your Settings are configured as you want, then click Get Embed Code. At the bottom of the pop-up window, there are steps to install the WordPress Plugin.