Are the American and Canadian servers down? I have been only able to connect to the EU server.. And since EU is the only server showing a usage statistic I assume it's not just me..
Yes you are not alone. My miner can only connect to the EU server. But this change has not been shown on the latest news page.
News
2015-03-31 : Brazil, Singapore and China nodes is turned off. Unfortunately, this pool do not produce profit, needed to support more servers. I do hope this pool can continue to stay for long.