I think altcoinix is involved. He occupies more than 51% of the hashrate, the generated blocks are returned to his wallet but are not divided by no share. Block Finder Time Actual Shares 769953 unknown 08/12/2018 04:57:20 0 769952 unknown 08/12/2018 04:56:06 0 His wallet: http://block.withcoin.biz:3001/address/wd6uGCJvaqCmTsc9QEFo8rpQet4evrDz1F
Dear altcoinix, sorry if I wrong. But at that time, I found that block 769953 to be find by your pool with unknow 0 share . And I checked http://block.withcoin.biz:3001 this block, I saw new coin (30) pay to wd6uGCJvaqCmTsc9QEFo8rpQet4evrDz1F. Is this your pool wallet? But now it changed to another wallet. Maybe wthc blockchain can be hacked.