Please compare the Piwik graph with the “Utenti” graph. Is it still broken?
It happened to me that I compared two different things and wonder why GA had a higher count.
Besides: Piwik might show up to 10% less than GA - this happens to me all the time.
I did some side-by-side tests of Piwik and GA a couple years ago, and GA was so incorrect that I stopped using it entirely. The GA results were just so wrong that I couldn’t trust any of their numbers anymore.
I’m not saying that’s what’s happening here, but in my personal experience, when the numbers between Piwik and GA differed, Piwik was much more accurate.
Whilst GoAccess would be fine for a single server back end application (eg. all PHP based) it misses on a few points. In my situation I have servers behind a load balancer and a javascript one page application. GoAccess
would not work for me. As our web site is for an intranet and can’t be accessed outside our network, Google Analytics can’t work either (And I don’t really want Google getting our statistics either). Also, GoAccess can’t track user actions nor button clicks etc in a JS app (And who doesn’t use some JS on their web pages nowadays).