Why doesn't Yin and Yang Master authorize to log in on the mobile phone?

You can use your mobile phone to authorize login.

Generally speaking, Netease official website logs in with the mobile phone number and Netease mailbox, and there are many ways to log in to the channel service, depending on which channel you downloaded it from.

The reason why you can't log in may be the problem of the game itself. You may be under maintenance. You can log in after maintenance. It is also possible that the signal is unstable or the mobile network is not open, so you can log in by opening the network.