Vietnam moved to a two-tier administrative model on 1 July 2025: 34 provinces and 3,321 wards, with districts removed. Buyers still type old district names at checkout. The app adds a block to the Thank you page. It pre-fills province, ward and street from the address the buyer already entered. The buyer fixes anything wrong and confirms, and only then are the values written to the order as custom attributes. Your Shopify shipping address is never changed.

• Pre-fills the new province and ward from the address entered at checkout.
• The buyer reviews and confirms the address on the Thank you page.
• Writes province, ward, street and a delivery note to the order attributes.
• Never edits the shipping address the buyer typed at checkout.
• Covers all 34 provinces and 3,321 wards, in Vietnamese and English.