1. According to today's headline data, the account number is wrong: when the user logs in to Yunjiaoke's account, the account number entered is wrong or incomplete, which makes the system unable to automatically identify the user information. Just re-enter the correct account number.
2. The system is under maintenance: most servers are in the vehicle management office. Usually old equipment. If there is a large flow of people, they will be paralyzed, and then they can't get in. At this time, you need to choose a time when you are less likely to go.
3. Network connection failure: Network connection failure leads to poor signal, and the official WeChat account cannot log in. At this time, it is necessary to ensure that the mobile phone network connection is good. You can try to reopen the training page of WeChat official account Jiao Yun Branch in a different network environment.