This C-Cex issue is really annoying, I can't withdraw my coins either. I have contacted C-cex and they've told me that they are awaiting a response from STS dev.
This is why they called "STRESS COIN"
HAHA, good one!
Do highest transaction referred to more than 4.5 million coins, coins do not card, this should make it clear in the above, POS currency credits there is a limit of normal hair