have same kind of problem
mostly 1 day no hashrate
some are connected and mining i see other can't connect or can't submit share
then my hashrate on pool is 0mh even some are mining
i email them last night but looks like no body cares
I'm running on ASIA servers but still no info posted on MPH about hash = 0 also
I also changed over to ETHMINER.EXE as it seems that Phoenix miner might be out of DAG??
running (5) miners at about 222 Mh/s and nothing being displayed on MPH