Help, i cant send ETC from my metamask

I can not send my metamask ETC balance, I have 0.5 etc in the metamask wallet, however when trying to finalize the transaction in etherwallet online, in the final step when confirming the transaction nothing happens, the window closes and nothing happens , What may be the problem?

First of all check, whether you have the right network.

Can you confirm MetaMask or MyEtherWallet?