Maybe you mean that the value of your Ethereum went down and not the content itself. It's because the price of Eth went down rapidly that is why your eth went down also.
No you must read again what OP wrote. He said his ETH went down when he can't login after some time. It's clearly his MEW was compromised. He didn't sent any token since he can't open his wallet for some reasons.
They suspected that the OP's account are attack by hacker in this situation you must do another MyEtherWallet account and transfer the funds. For the safety you must keep your private keys and avoid to click an any phishing link.