Store APi Sitemap

Hi everyone !

I am trying to get my sitemap requesting /store-api/sitemap, on frontend using javascript.
I am using postman to test the requests. On localhost, it works.
On production, it doesnt. I already changed sw-access-key to what is defined on backoffice, but the result is the same.
If I try to get /store-api/context in production it also returns not found.
And also works on localhost.
My BackOffice version is 6.4.20.0

Could you please help me to find the error?

Other thing: How could I get multi-language sitemap ? The file I get as an answer on localhost request, only have the default language sitemap.

Thank you so much for reading !