To redeem a coupon in Rhythm Hive, go the official website by navigating via [Menu (☰) > Coupon Registration] or pressing ""Register Coupon"" at the bottom of the main screen.
When registering a coupon, you will need the UID information of the account where you wish to receive the rewards. You can find and copy your UID from the in-game settings, and then use it on the official website to complete the coupon registration process.
☞ Go to the Rhythm Hive official website.