Thank you very much for using Coincheck.
Transferring funds deposited by quick deposit to your leveraged trading account is currently unavailable. If you wish to transfer funds to leveraged trading account, please avoid using quick deposit.
Deposit JPY/USD: https://coincheck.com/deposits
Account Transfer ：https://coincheck.com/exchange/transfers
You cannot move an equivalent amount of assets that were transferred by quick deposit for seven days starting from July 3rd, 2017.
Resumption of quick deposit and notice regarding transferring funds：https://coincheck.com/blog/3952 (Japanese)
We appreciate your understanding.