If you want to activate the pro version of the WP Authox Box Plugin, you first have to purchase WP Authox Box Plugin. After that, you can use the Active Pro License Key.
For activating the plugin, on the left side, head over to WP Author Box > WP Author Box Pro. After that, you will see Settings Option.
Here, you need to enter your License key, which you have received from your Author Box Account. Then Click on the Active button. Your pro plugin is ready to create a new look for Author Box.
Your pro plugin is ready to create a new look for Author Box.
Now you can customise your dream author box.