If you are within the warranty period, we'd be happy to provide you replacement keycaps free of charge. Please be advised however that at this time, we are only able to provide English US versions of keycaps.
To request replacment keycaps, please open a "General Question" support ticket.
You can do this here.
Please be sure to provide the following information in the ticket:
1) The model of your keyboard.
2) Exactly which keys you are looking to replace (we can provide up to 10 keys)
3) Your full shipping address including postal code and country