Free items can only be redeemed once per transaction

If you have several free items available for customers, only one free item can be redeemed per transaction. This means that even if you have three free items, you can only redeem one free item in a single transaction. To use the remaining free items, you need to make separate transactions.

If you have redeemed before and selected the same customer when placing an order, the redeem banner will reappear. This indicates that the customer still has more than one free item that can be used.