[Typo3] User Track partially working

[Sentenza]

Hi all,

My User Track extension works partially. This extension has been enabled using typoscript with : config.tx_loginusertrack_enable = 1.
When I select User Track on the BE and the folder containing my fe users list, only "active users" and "inactive users" parts of the extension are working. I can effectively list users which have been logged in during the last x days. 
But the "login log" and "monthly view" parts still desesperately empty. When I check the content of the table tx_loginusertrack_stat, it is empty too.
What's wrong ?

Thanks for your help ...

- Sentenza (sentenz)

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