about yesterday login problem, the site posted this news today:

各位会员，

大家好，昨晚服务器自动备份时出现异常导致所有账号无法登陆，经过技术人员的不懈努力，现已恢 复正常！

我们后续会排查宕机原因，杜绝再次出现同样的故障。

本次事件给各位会员带来不便，特此向各位热爱天空的会员致以诚挚的歉意！希望大家继续支持我们 ！

以上，

translated:

Members,

Hello everyone, last night when the server automatically backup all the abnormal accounts can not be logged, through the tireless efforts of technical staff, is now back to normal!

We will follow the reasons for the follow-up, to prevent the recurrence of the same failure again.

The event inconvenience to our members, the sky is hereby love to you my sincere apologies members! I hope you continue to support us!

more than,