Is there any issue in these pools ? I ask if you know something.
I can only guess that they are waiting for exchanges, when they open their MOON wallet for deposits.
https://chainz.cryptoid.info/moon is on 0.17.1 and it shows which pools mine Mooncoin and what the current block count is.
Prohashing block explorer
https://prohashing.com/explorer/Mooncoin/ is also on 0.17.1.