Don't work correctly? or is it SCAM?

Block maturity requires up to 520 blocks. Usually it's less indeed.
guys, dont know if this is required for a pool. i dont think it a scam. never from euroline
85 block x 7.5= 637 coins . if he dont pay you guys, i will pay you back. i been ask for help from him sometimes
just wait till he get back online
dont worry, be happy.
ps. if you go to this
https://discord.gg/C8mJg44 you could apply to get free coins from 100 to 300 each
next time if you dont want to wait, alway go with the big hash http://nuko.oldbeyond.com/#/miners