Maintenance will occur at the following time:
North, Central, and South America: 4/15/2020 19:00–22:00 (PDT)
Europe: 4/16/2020 02:00–05:00 (UTC)
Japan & Korea: 4/16/2020 11:00–14:00 (JST/KST)
China: 4/16/2020 10:00–13:00 (HKT)
Details:
-Event preparation
Please Note:
*If you are playing the game when maintenance begins, you will not be able to return to the Waiting Room under any circumstances. Please avoid playing the game near our scheduled maintenance time.
*The game cannot be played during maintenance. Please wait until maintenance is over.
*Even if you are using a Solo Shelter at the start of maintenance, you will be returned to the Waiting Room when you log back in.
*Remaining Express Pass time is still consumed during maintenance.
More info: https://www.letitdiethegame.com/news.html#/5190/