1. Open the Pinduoduo Mobile Merchant Edition, click the "My" button and enter the "My" page.
2. On my page, find and click the Settings button.
3. On the Settings page, locate and click the Account Settings button.
4. On the "Account Settings" page, find and click the "Technical Service Fee" button.
5. On the "Technical Service Fee" page, find and click the "Close Technical Service Fee" button.