How does the test mode work?
The Test Mode option is available in the Advanced tab of the plugin. It allows you to test the application of the automatic internal links before actually changing the HTML presented to the visitors and search engines.
More specifically, when the test mode is enabled, the automatic internal links will be applied on the front-end only when the posts are visited by the logged-in WordPress users that have the capability specified with the AIL Menu option available in the Capabilities tab.
Please note that with the test mode enabled, the Dashboard and Juice statistics are generated as if the automatic internal links were actually applied to your website.