I can't change the dictionary language

I’m trying to change my dictionary to French, but when I’m changing the dictionary language, there’s no button to save the changes, but also the changes are not automatically, they’re always the same settings.

What can I do?

Hi AxelPS,
Do you get any error message on the page after you change your dictionary language? If there is any error, changes can’t be saved automatically. Make sure to check if there is any error message in red letters on the page. Thanks.