When i installed Prestashop i choose my native languages instead of english (damn me!!) since Prestashop state: "This language is just for the installation, you will be able to change it later on." Not really true.
Then i added other two languages, set as default, set as language to use for my back office and front office, set as default language for the user, ...
Everything seems translated BUT NOT The initial data (like sample products ) given from prestashop installation.
Those are still in the language used to install presta.
Now, products aren't a big deal (they have been all replaced)
BUT pages like 404 and Countries are!
When my user register and find the "Select your country" dropdown, this is still in first language!!
Can someone please point me where i can change this??