Why can't I change the nickname of the phone number of the US Mission?

1. First, open the Meituan in the mobile phone, click the order at the bottom, and select the order to modify the mobile phone number for receiving meals.

2. Secondly, click the customer service icon on the upper right, click the new batch of replacement questions, and click the questions to modify the mobile phone number for receiving meals.

3. Finally, after clicking the question, you can contact the merchant directly and ask the merchant to write down the mobile phone number to be modified.