Multilanguage website

Hello Bryan,

I am building a multi-language website
English, German, Spanish, Italian, French, Chinese, Japanese
My problem is when an user select a language on the wordpress storefront and sign in or do any action redirecting to the godaddy storefront, the language previously selected won’t be the same.
What would be the solution to pass the language selected in wordpress. It is something with the cookies.
Maybe it would better if user can always stay on the wordpress storefront for every action (sign in, cart, pay, …)