Can't disarm Alexa anymore in french

Hello, SInce a few days I can't disarm Ring with Alexa in french in France. Since months I use to use Alexa for that. I can arm Ring with Alexa, I have to use the keypad or the app to disarm as it does'nt work anymore if I say the order to Alexa. When I say "Alexa désarme Ring" (Alexa disarm Ring) Alexa answers she can't help me. It seems Alexa doesn't understand the order. Is there something changed to disarm in french ? Of course I have removed and reinstalledthe skill. Thank you for you help. André