Problems with the headers

on the web site : https://www.alexfocus.com/boutique/

i have a FrançaisFrançais

for Language.
can you help me ?
thank you

Hey there,

I hope you are well today and thank you for your question.

Checking things out it seems the header isn’t localized, I’ll report this to the development team so it can be addressed.

In regards to the strange link appearing in the header, you can remove it with the following CSS.

Admin Area -> Appearance -> Customize -> Additional CSS

/**/
li.top-multilang {
    display: none;
}

Best regards,
Support.