Maintenance time：
4.26 20:00 - 4.27 6:00 （UTC+8）
4.27 20:00 - 4.28 6:00 (UTC+8)
There may be some network variation because our links between servers will be upgraded and cut-over.Players in Asia server may get disconnected or have high pings during plays.
We are sorry for all above and long for your forgiveness.
Servers maintenance notice（Asia zone）
Source: Steam Community (opens in a new tab)