I setup my z9 on MPH's switching port 17023 yesterday and it was working fine, but when I woke up the miner had spun up and down a few times mining on a backup pool for moments at a time earning nothing basically. I was going to mine on the single coin 20XXX ports but it was giving me problems, which is why I switched over. Well seems the ZEN pool is down and the switcher thinks it needs more hashrate causing everyong to stall.

I have as of now changed to the ZCL port, and it seems to be working just fine.