Same here, Brazilian player.
Game is utterly unplayable since Monday around midnight.
Got constant DCs. Even at Guildhests. Tried to to Omega Solo Duty and got DCed in there.
Error 90002 everywhere.
Tried resetting the modem, changing IPs, but to no avail.
Sadly SQEX looks like it doesn't even care about us non-US players.
PS4 player here.