Change Your Language and Marketplace in the Amazon 1Button App
The Amazon 1Button App will be shown to you in the language and corresponding Amazon marketplace based upon your geographic IP location. However, you can change the default.
To change your default language and Amazon marketplace:
Click on the Settings icon at the top of the Amazon 1Button App.
Click on Change Country.
Select the Amazon marketplace that you'd like the app to default to.
Click the Save Changes button.