1. Tap the "Mission Gift/Exchange" button
2. Tap the Mission Gift that you want to exchange
3. Tap the "Exchange" button
4. Tap the "Exchange" button in the dialog again
5. Use the "Confirm" button in the Gift Box to receive the gift
1. Tap the "Mission Gift/Exchange" button
2. Tap the Mission Gift that you want to exchange
3. Tap the "Exchange" button
4. Tap the "Exchange" button in the dialog again
5. Use the "Confirm" button in the Gift Box to receive the gift