C-cex said:

Not true. We did not get any support ticket of this kind. Maybe You should try if You really have this problem?

If anybody having any problems with exchange - just use our support system - we solve tickets very fast.

As I previously stated, the C-Cex support ticket system kicks back an error message two hours later stating that they do not accept emails from my email host.  (That must be how they can solve tickets very fast.)

This problem was reported to C-Cex several times at their Skype address, along with the missing Leafcoins.  No response was ever returned.

They have also not PMed me here to resolve the problem, though they clearly read this forum.

I stand by my previous statement:

No one should use C-Cex for any purpose whatsoever.