Meituan preferred why others have my code.

Because you bought the goods, the store will have your claim code.

After Meituan chooses to buy something, you also have your claim code in the merchant, which is to prevent others from taking it for you or taking the initiative, so others will also have the code of Meituan's preferred customer.

This measure was put forward by the US Mission. When customers pick up the goods, they can compare them with the codes in the hands of merchants, which is convenient and can prevent others from picking up the goods.