点击顶部左上角【兑换】

Click on the top left corner 【Exchange】

输入兑换码 - 再点击【确定】即可兑换证书

刷新兑换证书 - 用于售后自动追补证书

Enter the exchange code - then click 【OK】 to exchange the certificate

Refresh exchange certificate - used for after - sale automatic replacement certificate