Ah sorry, it was unclear. I meant Arte and the other french platforms do not appear on the watchfrom.eu page whereas they appear on senscritique (being french and completed by french users). So it could be a lead to complete the "Where to watch" information you already have.
Edit: actually I did not pay attention to the country filter on the "Where to watch" part before ^^ And I see you get it from justwatch.com. I'll go take a look there to see how it works.
Edit 2: ah but so does senscritique actually ; and Arte appears on JustWatch so I do not know what the difference is 🤔

Ah yes, those damn users will always find hidden bugs ! ^^ I am glad it helped :)