They say is already done, but i cant find in etherscan, i pay gas feed and them they use low gas so this means my tx can take months if they make it
You can check by yourself in twitter or social media whats happend with graviex, becarefull
I faced the same issue and the fact is that they charge a lot but they pay the lowest fees for miners. Meaning, that they send them but I get my money after a week.
That was enough for me to stop trading there.