1) Check whether you were getting a real hashrate off your miner - it is known that ccminer reports about 30% higher hashrate than actual. Go to -> graphs and see what's the measured hashrate from the server side. This is how many shares you have submitted.
2) Part of your funds are moving between the pool and the exchange, and are credited later on. It is normal for your balance to disappear for few hours.
3) Because of the PPLNS method of the pool, you will lose all your shares for the last round if you disconnect before finding a block, thus if you were switching between algos - you might have lost a significant part of your earnings.
4) The current profit of any coin is overestimated by a huge margin on nearly all pools. Don't trust their advertised earnings - check the calculator yourself or even better - calculate your earnings using your hashrate and the coin's block explorer (this one is harder but generally the most precise method).

I'm happy with MPH so far - currently running a fixed algo on 17xxx port and all my earnings are around those advertised by the calculator.