Found the problem, for info it is an issue with litespeed caching js optimisation settings. Thanks.
@robert Hi, Yes i know that, i don't understand why i have english language instead of french, my browser is in my language french. Thanks.
@sofy Hi, I have the same problem with back smash in mail : Votre nom d\'utilisateur : Test100 Pour définir votre mot de passe, visitez l\'adres...
OH yes of course 🙂 Thank you very much, so simple, i lost that... Thanks again.