Error of "Sorry, this voucher has been fully redeemed.":
This error specify that your voucher has been recognized as used. Generally, this happens when:
a. Your voucher has truly been used before, or;
b. You have a recent payment failure/cancellation at your Lazada orders.
We recommend you to:
1. Open your Lazada app, check your 'Order History' and reconfirm if the voucher has been applied to any of your previous order(s).
2. If your purchase was recently cancelled instead, please wait for a couple of minutes and try to use it again.
If the above does not help, kindly contact Lazada customer support for the assistance. You may call their hotline at +603 2728 6600, anytime between 9AM to 6PM, Monday to Sunday.