1. First of all, too much junk in the mobile phone cache will lead to login failure. Users can clean up the background of the mobile phone application, or clean up the mobile phone cache, and then try to log in again.

2. Secondly, it will be caused by network reasons. Users can check the network status of the mobile phone, disconnect the mobile phone from the network and reconnect it, switch the mobile phone network, or turn on the mobile phone in flight mode and then turn it off.

Finally, if you still can't log in, it is caused by a software problem. Users can uninstall the software directly, and then download and install it again from the app store that comes with the mobile phone.