To redeem codes in Honkai: Star Rail, you first need to unlock the Mailbox by completing the Trailblaze Mission "A Moment Of Peace". This mission occurs after you reach the Astral Express for the first time.
To redeem codes in Honkai: Star Rail, you first need to unlock the Mailbox by completing the Trailblaze Mission "A Moment Of Peace". This mission occurs after you reach the Astral Express for the first time.