Please find the following guide :
1. For the redemption code, it comes in 2 parts - front and back
It is split by the " " in the code. Please omit the " " in the redemption.
The first 9 alphanumeric digits is the front portion for the Main Item.
The last 9 alphanumeric digits is the back portion for Free Shipping ( In-House Delivery)
2. With "CB1234567_FS1234567" as an example,
Input Front Portion : CB1234567
Input Back Portion : FS1234567
3. Please kindly input the 2 codes individually under the "Apply a coupon" and check out.