I don't think it's a scam, there's been decent support on Discord.
There was a fork a couple of days ago to increase MN rewards and decrease POW rewards. Many MN's have been stuck on the previous fork and I don't think enough operators have fixed the issue. This has lead to local wallets and pools ending up on the wrong fork. Reindexing your wallet helps, but you basically want to be checking your block height against the explorer:
http://explorer.polispay.org/insight/Most importantly, Coinsmarkets is on the right block chain:
https://coinsmarkets.com/walletstatus.php?ticker=POLISalso, the pool providing the main hashing power is on the right chain now as well:
s2.altcoinix.com
There are still several pools that seem to be on the wrong blockchain. For anyone mining, be sure to check the round against the explorer (which is really something that should be done regularly out of good practice).
Missing TX's are from either wallets or pools being stuck on the previous blockchain. These seem to be stuck on a block height of 7688....so if you're seeing that height on a pool, avoid it. If you see it in your wallet, re-index.
To help get you on the right chain, here's a short list of nodes that are on the right chain:
addnode=192.243.103.182:24126
addnode=185.153.231.146:24126
addnode=91.223.147.100
addnode=35.227.49.86:24126
For anyone running a MN, the payouts have been great. If you are configured correctly and properly synced to the right blockchain, the rewards are hard to beat.