Please read one post above.
Seems like H2C did upgrade, but took not correct version of the wallet and still running on old and now wrong chain.
H2C has to update the wallet to 0.13.5
By then you all will be mine coins with no place to sell.
H2C is great pool, and thank you for being EMC2 loyal miner.
But until they update the wallet EMC2 mining is not possible on H2C.
Wrong chain got orphaned and all wallets switched to the right one.
H2C is mining right chain now, but to avoid situations like this in the future, and to always support EMC2 with hash on the right chain,