When withdrawing from a decentralized platform like IDEX or Forkdelta, you may need to send less than the full amount. For example, if you are seeking to withdraw 100 XCLR, you should withdraw 99.99999999 XCLR instead of 100 XCLR. There are 8 decimal places so the previous example uses eight 9’s. The reason for not sending the full amount is an issue with the smart contract that cannot be patched (because smart contracts are immutable). Please email email@example.com if you need further assistance.