@ emmanuelfamillelopez - Sorry for late reply. I overlooked this question on wordpress support forum. Regarding Google Analytics Metrics - Lite and Pro both version has same functionality as it's the core of this plugin.
As you already mentioned you can check realtime stats in Google Analytics to make sure code is installed correctly by AIOW plugin. Let me paste some information here again just incase other users want to verify that: https://twitter.com/Crunchify/status/366938444599005185
Are you still facing this issue? I would suggest to customize your Google Analytics Dashboard in order to see your metrics.
@Jaxmax thanks for information.
PS: I'm usually very active on plugin home page for any support questions.