1, generally caused by too many people using flow control at the same time. If you use the app during peak hours, you will often be unable to log in because there are too many people. It is recommended that users try to avoid the peak hours and reopen the app to handle related business.
2. This will also happen if the version of the mobile app software for traffic management 12 123 is too low. At this time, users can go to the official app store to update to the latest version.
3. There is also the problem of the mobile network or WiFi signal where the user's own mobile phone is located. At this point, the user can try to reconnect to an effective WiFi network, or turn off the mobile phone traffic, then turn it on again, and then open the app.