Where can I add a promotional code for my order? 18 February 2022 01:57 Updated Click「Add promotions」in Atome app and enter the promo code before you confirm payment. Related articles What are the terms and conditions for a voucher/promo code? How do I use my vouchers? How do I register with Atome? Transaction details What does this message ‘Sorry, we are unable to process your payment’ mean?