GoldBlocks (GB), MazaCoin (MZC), SysCoin (SYS), and Digibyte (DGB / DGB_S) will be removed from ipoMiner on June 1, 2017. Please withdraw those three coins prior to June 1 if you have a balance and want to keep them.

GoldBlocks just finished its POW mining period and cannot be mined now.

MazaCoin (MZC) was removed from Bittrex so it lacks liquidity for being able to use it for multiport mining.

SysCoin (SYS) has not been mined on ipoMiner for quite some time, since they changed the mining algorithms/merged mining last year.

Digibyte (DGB / DGB_S) recently implemented and activated Segwit, which requires stratum modifications to continue mining it and we are not currently planning on making them.