I'm able to log into the game, and it loads up to the start screen, but a dialog box pops up showing some Japanese words and a date, 2018-03-28_03:13.

it also says

EZFRD64.DLL+2413
WINMM.dll+2889
KERNEL32.DLL+11FE4
ntdll.dll+6F061

If i click it, the game will close normally, as if I pressed exit.

I have uninstalled the game, and reinstalled it, and it shows the same error still.
It was working fine yesterday, and i haven't installed any new drivers.

If I simply push the errorbox to the side, I can continue logging into the game, and even go to Eureka, but without sound, and the error box would be in the corner of the screen. (the sound works normally outside the game)

I'm using windows 10, EU copy of the game.