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.
Both these are in relation to language strings used in templates in profile tabs, and in both cases we do have the necessary require_lang calls that are running.
Needs more investigation.
Needs more investigation.