We apologize for the instability of composr.app and appreciate your patience. We are working on the statistics addon and trying to find an optimal way to store and render data. Unfortunately, we have yet to find a solution that can handle the traffic (and therefore, tens of millions of statistical records) of composr.app. We're working hard on one.
#1470 - When you try to view site stats after you enter the date coverage....
An incorrect change in 9.0.10 caused an error when viewing stats for a specific page.