I've the same problem here.
Cloudflare claims hashflare.io to be down.
Status hashflare claims it's working.
But an hour ago cloudflare told me that I was 'rate limited'. Not long ago I had that exact error when using Poloniex: slow internet connections, too many requests in a short time. Later that day everything worked fine again, so I guess it will be the same for Hashflare.
And one other thing:
the withdrawal problem yesterday was (is?) due to the congestion of Ether. Same problems at least with Bittrex and Coinbase. Withdrawal BTC was restored yesterday.