To use the pro version of the plugin you need to uninstall the free version of the plugin if you have installed it previously.
Login to users.freemius.com/login to access your account dashboard.
Navigate to the downloads section using the menu and click the download button to download the pro plugin.
A zip file with the pro plugin will download to your computer and a dialog with your license key will show up. Click on the “Copy License Key” button and navigate to your WordPress dashboard.
Inside of your WordPress dashboard go to Plugins -> Add New and click on the “Upload Plugin” button on the top. Then click on “Choose File” and select the Zip file that was downloaded to your computer. To finish click the “Install Now” button.
After install is complete you will get a success message. Click on the “Activate Plugin” button to activate the pro plugin.
Scroll down in the plugins list to view “Unlimited Elements for Elementor Premium” and click on the “Activate License” link.
In the dialog paste your license key and click on the “Activate License” button.
Thats it your done! You have successfully activated your pro license. Now you can enjoy all the premium features and tools the plugin has to offer.