Disconnected from server.(300)

[HikaRiRi]

hi today i have problem and yesterday nothing, why is this happing?

[Andyhimself]

Starting at January 21 4:00 AM PST / January 21 12:00 PM UTC, all servers will undergo maintenance for approximately 3 hours and 30 minutes. During this time we will be introducing four new North American servers and two new European servers. An in-game notice will be given 30 minutes prior to the maintenance starting.