I agree with you, in the last 2-3 weeks MPH software had some bugs, maybe there is some work in progress migrating/enhancing the pool.
But I also think that a pool admin has the right to sleep too.

It's ok for me if he doesn't answer H24.
I'm sure he will try his best to fix it soon.
at least we know that everything end up ok eventually...
But, considering the size of these pools, there should be someone H24.
If they really are a reputable miningpool they should offer much better customer service.
I actually liked miningpoolhub for most part, I just didnt sign up with them to wait and see and have funds witheld from me indefinitly or to be given zero response or clarification about contingencies.
To me, it's probably one of the best pool.
But hey:
if you take ZCL, pool has 26400 KH/s
Take 0.9 fee, that's 237.6 KH/s --> that's $3,177 a day
and that's just for Zclassic, there is 34 other pools...
So, I hope that the guy is paying someone to watch the pools while he's sleeping.
And again, better communication would be nice...
True, the guy makes a couple millions a month. Can afford a small group of sysadmins to maintain the pool 24/7