Why can't I use the skin exchange voucher of Ace Wars?

The system is busy. The system is busy, so you can't use the skin exchange coupon. Ace War is an apg mobile game, and the specific steps are as follows: 1. First, after entering the game, click the activity button in the upper right corner; .

2. Secondly, click the gift package code on the activity page to enter the gift package redemption page; .

3. Finally, on the gift package redemption page, enter the gift package code and click the redemption button to redeem it.