You set the language of the payment gateway in the payment creation request, in the "lang" parameter.

The highest priority is given to the payment gateway language that the paying customer has already changed at the payment gateway.

If the customer has never changed the language at the gateway, they will be shown the language defined by the "lang" parameter.

If you do not specify the language in the "lang" parameter, the customer will automatically be shown the default language of their internet browser.

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The following language localisations can be displayed in the payment gateway:

If the customer does not use any of the languages listed above (e.g. their internet browser is set to Portuguese), the payment gateway will automatically be displayed to them in English.