To track your coins, find the destination / source wallet address in a reliable Block Explorer such as BlockChain. If the coins were indeed sold, they will appear in the history of the addresses of these wallets.
When you send / withdraw coins to / from your Plisio account, your incoming / outgoing balance is shown on your wallet for about 3 seconds or less.
If you have a problem, contact our Support Team with a ready block explorer link or your cryptocurrency+transaction ID