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.
I'm afraid we can't support translated list fields. The list options aren't translated, and the selection is stored by the literal selected string (in English or whatever) rather than a list position. It would be a lot of work to change that. I'll keep the issue open for that possibility though.
Not sure how to tackle this when everything else is translated to French/German except these 'values chosen from a list'.