JosVsquez Why is gas limit 0 in your screenshot above?
If you have the right RPC address, and Chain ID 21, then when you click trade please do not change any of the default settings. These trades are running on our sidechain - it's virtual Ethereum, the gas fees are virtual. There's not reason to worry about gas price / gas limit if it's a trade on Morpher.
No one else has reported the same problem as you, if you can help us diagnose it yourself that'd be great. We don't have control over Metamask to be able to predict what is your particular issue.