You can top up your Epre Gift balance to your card by using the Epre app (available for iOS/Android). Once the top up on the Epre app has been completed, you can use the balance for shopping without worrying about the expiry date of your Epre Gift.
To top up your Epre Gift balance on your Epre app, please follow the steps below after you have downloaded the Epre app and issued the gift card.
(1) From the Gift Card home screen, Tap "Menu."
(2) Tap "Top up your Epre Gift balance on the Epre app."
(3) Confirm the notes, Tap"I want to top up on the Epre app right now." 
(4) Log in to the Epre app.
(5) Enter the Secret code on the Top up from Epre Gift screen. 
(6) Agree with the Epre Gift terms of use, Tap"Submit."
(7) Top up completed.
※In order to register for the Epre app, you will need to issue an application number from a partner website. If you do not have this number, you will not be able to register for Epre even if you download the Epre app. Thus please make sure to apply from YOLO JAPAN website. The application number is valid for 48 hours. After the expiration , please reapply from the website.
YOLO JAPAN https://www.yolo-japan.com/