Headline unlocked successfully, why failed to log in?

1. First of all, it may be that your network quality is too poor, resulting in login failure. I suggest you check your internet connection.

2. Secondly, it may be that there is a problem with the headline server today, which leads to the login failure, but this situation basically does not exist.

Finally, it may be that your mobile phone number is logged in on other devices, and then you logged in without logging in.