Guys, I have been like you the past week and was extremely worried about relatively large BTC withdrawals not processing. I have to admit yes, they are having extreme delays and probably major issues now very messed up exchange for the time being. but honestly i never missed a single coin, I always got my BTCs even if extremely late. I had a withdraw that took almost 3 days and others that were processed immediately.
I am currently waiting for a withdraw for almost 24 hours and it is still not processed.
It is of course your choice but I have the feeling they are not scam - just facing major issues in their code or they could be migrating to something better.
I would avoid it in the next week till everything is fixed but if you already have money there you are 99% ok and will receive it sooner or later so chill out