Answer: There can be several reasons an order can not be canceled. First, make sure that your wallet is smart contract ready . Also, it may be necessary to try several time before the order works. Or, the order has been matched already, in which case you should see the received funds in your wallet. If you have already put a collateral and canceling did still not work, try removing it and setting it again. If it did not work after some attempts, please reach out to us.