You may receive the “Submit Failed” error message for the following reasons:
1. Block rollback Your order might fail if the MainNet is experiencing block rollback.
2. Failure to call contracts Your order might fail when contracts cannot be called, which will happen if you do not have enough Energy, bandwidth or token balance in your address. Transaction consumes your bandwidth and Energy. You can obtain bandwidth and Energy by freezing the asset, or make sure that there are enough funds in your account balance for burning
3. Network Delay Occasional MainNet delay or unstable nodes might affect your order. When “Submit Failed” occurs, we advise you to wait for a while.