It's happening to me now. I had some SALT balance and now they vanished it. If I download a completed .csv list of my orders I can see the filled buy order for SALT coins but my SALT balance and my order sheet is completely empty. They also took the satoshi score which first got me suspicious because if you have filled any type of order you'll have at least some satoshis left on that wallet.
I've submitted a support ticked I really hope I can get my money back to get out of that awful exchange!!!