I'm sure your coins are safe. Don't worry about anything, let them post update.

For future. Earthcoin withdrawal on there is roughly 0.001 EAC. What I'd do is just withdraw after each trading session and transfter back next time you go in. Earthcoin is so incredibly fast, it would only take a few seconds to see the transaction go through and you would have a whole lot of peace-of-mind for that tiny fee.