Hello.
In the official documentation, it'said that support many locales, but when displaying the checkout page, it's taken into account several factors. How factors are prioritized to define locale?
https://developer.paypal.com/docs/api/reference/locale-codes/
Pass a locale code to PayPal to customize the locale of the buyer's checkout experience. To determine the locale for the checkout page, PayPal uses the locale code and these other factors: The shipping address country provided by the merchant in the request. The country taken from the locale code parameter passed by the merchant. The country of the currently logged-in user. The merchant's country.
