Most likely the hacker just brought out your Ether.
This is a major exchange, there are delays, but the volumes are huge to hunt for your coins.
This is happening to me right now on a daily basis with Cryptopia. Someone is constantly trying to hack my account and it keeps getting locked, so I no longer use it anymore. I have another email I use now for Cryptopia that no one knows about as I use it just for one or two things. Unfortunately my old email keeps getting login attempts for all sorts of things. I really need to get a new email and use it for just a few exchanges I think. I am sorry for your loss, losing one ETH is not small change. I hope one day you get it back.