From WordPress Dashboard > Appearance > Widgets you can enable WP AdCenter widgets according to your theme's available Widget areas. Once widget is enabled you can add created AdZone in widget.
Once you have purchased WPAdCenter Pro plugin from wpeka website, you will see Master API Key and product ID of your purchase. You will need those API key and product ID to use PRO plugin.
To activate the WPAdCenter Pro plugin please navigate to Settings > WPAdcenter Pro Activation and provide API Key & Product ID and click on save changes. After that you will see your API key status is activated and you can use the WPAdCenter Pro plugin.
You may want to disable plugin API key to use the plugin on another domain. You can disable the API key from WordPress Dashboard or from the WPEka Club.
To deactivate the WPAdCenter Pro plugin please navigate to Settings > WPAdcenter Pro Activation and click on the API Key Deactivation tab. Deactivate API Key & save the changes.
Navigate to WPEka Club API Keys page. Locate the domain name under plugin for which you want to disable the API Key. Click on the delete button, this will deactivate the particular plugin API Key for that domain.