How do I calculate the Customs GST amount imposed on my online purchases?June 25, 2019Do I need to pay any extra fee to use POPStation as my delivery address?June 25, 2019 Where do I enter my voucher / promo code? June 25, 2019 B Where do I enter my voucher / promo code? For step by step guide, please refer to the details here. Categories: Payment, Top FAQ