・From the Mission screen, you can check your earned stickers and gift exchange history.
・Earned stickers history will be deleted after one year.
Earned Stickers History
1. Check your stickers by tapping "HISTORY" in the upper right corner of the mission card
Gift Exchange History
1. Tap the "Mission Gift / Exchange" button
2. Then tap "HISTORY" in the upper right corner of the screen to check your gift exchange history