I have never had a problem at protopool. their hashrate is quite low compared to a few others on this coin but the estimated coins for my hash power was pretty close to actual payout. pool hashrate can change by the minute, making your expected profits change with it. check your pool's hashrate daily and also be sure you didn't have a stratum disconnect. to call them scammer with no proof is not right. When you have such low hashrate like proto, luck is a big factor. some hours you only find 0-1 block! others we find 7. average 4-5. all luck.