Once you have used a voucher, you can now archive it!
Swipe Right to Archive/Unarchive
OR follow the steps below
Open up your used voucher and click the archive icon as shown below
Click Archive to confirm
Your voucher will now be shown in your archived vouchers. You can reach this by clicking on the archive button at the top right corner of your vouchers page.
Please note: To get back to the vouchers you are yet to spend, click the archive button again!