1. Check whether the network environment is normal;

2. Update the APP to the latest version, which can be done in "Settings-Check for Updates";

3. Restart the APP and try again;

4. If you still cannot successfully open the APP, you can click the customer service icon in the upper left corner of the homepage for consultation. Online time: 9:00-21:00 on weekdays Beijing time, or add WeChat customer service QuickFox2020 for feedback;