You can register a coupon using the methods below depending on the OS of your device.
Once registered, the items will be delivered to your in-game message box.
■ Android Devices
You can access the coupon registration page from the [top-left banner] in the lobby or the [Coupon] tab in the event popup.
Tap the [Use Now] button ▶ Enter your E-coupon code
■ iOS Devices
You can register your coupon by accessing the coupon link corresponding to your game.
[Superstar SM]
https://coupon.dalcomsoft.net/ssm
[Superstar JYP]
https://coupon.dalcomsoft.net/ssj
[Superstar STARSHIP]
https://coupon.dalcomsoft.net/sss
[Superstar ATEEZ]
https://coupon.dalcomsoft.net/ssat
[Superstar STAYC]
https://coupon.dalcomsoft.net/sssc
[Superstar WAKEONE]
https://coupon.dalcomsoft.net/sswo