To be completed by the original poster:
I have created a layout that shows the name of the month and the day (example: Enero Lunes). The players display this information without problems in the default language configured in Settings/Regional/Default language, in my case in Spanish.
Now, I have to add a player in another country and I want this information to be displayed in the language of that country, for example in English, but the information is displayed in Spanish and not in English.
Is there a way to set the default language for each player?