Due to a technical issue our trading engine has experienced some downtime since 18:30 this evening. You may have experienced some errors or less functionality on the website or API. Also the websockets have been idle for some time. Some orders have incorrectly shown up as 'open' but have not been put through to the orderbook.
We have worked hard to resolve the problem and can inform you that everything is now back to normal. Our apologies for any inconvenience.