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