1. Moban APP will match according to the user's personal data, hobbies and other information, and recommend the corresponding users to make friends. Because each user's information and hobbies are different, the matching range will be different.

2. There are some errors or anomalies in the matching process of the matching APP algorithm, which will also lead to the matching result not meeting the user's expectations.

3. Some bad elements will use Moby application for illegal activities, such as fraud and pyramid schemes. Therefore, Moby APP will also strengthen audit and management to prevent bad elements from using the platform for illegal activities.