I sent 6 million tokens from the X-Cash desktop wallet to an exchange wallet and they were not received. Is there a person that can troubleshoot the reason this occurred?
First you should check if you are using the latest wallet version. If not, Download the latest one and resync your wallet. Most probably your coin are still there after syncing.
Or..
You sent without a payment id, most exchange have unique payment id partnered with your deposit address.
Or..
You just sent your coins and most of the time it will not show up in your deposit history until it has 30+ confirmation.