Hi, my username is funnyboy027 at MPH
I have 3 rigs mining zcoin at MPH using ccminer.
Now only 2 are working, 1 rig has error when connecting to your pool, it say: "failed to get extranonce1"
All of 3 rigs have the same network connection.
Please help me to solve it
i've same problem with you

someone can solved this problem please help us.
Had the issue as well while mining lyra2z (asia.lyra2z-hub.miningpoolhub.com). Just change to europe or us server. Solved.
try every server here same issue.
Here are server info for several regions.
U.S. : us-east.lyra2z-hub.miningpoolhub.com:20581
us-east.zcoin.miningpoolhub.com:20581
Europe : europe.lyra2z-hub.miningpoolhub.com:20581
europe.zcoin.miningpoolhub.com:20581
Asia : asia.lyra2z-hub.miningpoolhub.com:20581
asia.zcoin.miningpoolhub.com:20581