Bad news guys and girls, I'm getting a 504 Error again.
Try it again, just like others me as well can verify that the site is working and not showing any error message. If you have doubts with them now, you should move your funds somewhere you are confident with.
The exchange is live again, this is really one of the risk of every exchange, they are subject for attack if they can target big exchange, what more on small exchange, I'm glad that they have countered the attack, and if you don't have confidence on small exchange on it's security then go for big ones, but Graviex seems, can handle the situation.