Users found out earlier morning of December 19th 2018 6AM Eastern USA time and til now has not been resolved yet. Users were not able to withdraw their daily profit of ARB tokens to Exchange in order to trade to ETH for cash. This blocked appears to be for everyone, all users, according to the telegram chat group pinned message. There wasn’t any scheduled maintenance announced, there wasn’t any announced message via email that this block will be happening, and it’s been more than 8 hours as now still no words no when it will be un-blocked. Let’s hope arbitraging.co team fix this soon