I have same problem.I have tried multiple pool all same. MNP. suprnova all report half of my reported hashrate. I agree that all monacoin pools are little scam. I would have not bothered if the difference was about 10-15%. but difference is about 50% which is not acceptable. I have started mining ethereum on ethermine and at least that is giving me expected return. so will stick with that for few days and see what results i get.