Mario on "[Plugin: W3 Total Cache] Total Cache with Xcache is not working"

Hi,
i installed Total Cache and i'm currently running Xcache 2.0.0 on Debian 7 Wheezy.I enabled caching with Xcache for Pages only.
I checked phpinfo() and Xcache is correctly running, i've also added admin directory in my www directory, enabled HTTP Authentication and i correctly see the Xcache monitoring panel.
Xcache, however, does not cache anything related with Wordpress, it just caches pages that are related to the monitor panel itself.
How can i spot the error? Could you give me an advice? Thank you.

https://wordpress.org/plugins/w3-total-cache/