Since Friday, April 18, I'm not able to login anymore - says invalid credentials. I contacted support on Friday, waited during holidays and contacted them again yesterday and still no answer. Since I registered AFTER the heartbleed bug, I use a Linux-based desktop and I have 15+ characters long password I doubt I've been victim to phishing or other attack. Admins simply blocked my account and stole little more than 10 BTC deposited!
DO NOT PUT YOUR MONEY TO BTC-ARBS, IT'S A SCAM!!!