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.
#1274 - One-click download from Launchpad / switch to Pootle
It is based on a fork of Pootle. We could switch to Pootle instead, hosting it ourselves.
Or, we could switch to Transifex.
I think I prefer Pootle, as we could integrate it similar to the tracker.
(Pootle too complex to install without spending a lot of time, and is in Python so wouldn't integrate easily)