Connection Error? – Super Junior SHAKE Review

So far, this game, and all the other "SHAKE" games has all said that there was a connection error before the game starts up, then it wants me to put in an account name, which I can't do because it always pops up the connection error. This has happened on two of my devices and I do have wifi when I want to play it. I've played the games before and it worked fine, but now, all of them say connection error.
Review by Polyester998 on Super Junior SHAKE.