Sometimes, transaction has been pending for mins, even days due to low gas price on ethereum. If this happen, new transaction will be pending since old transcation has lower nounce thant new one. EVM package transaction following nounce for certain wallet.

For example, if a wallet release two trades, one’s nounce 1, another is 2. Basically, trade with nounce = 1, will be packaged first.

So if pending transaction is there for long, it will block new transaction be traded. We can replace it with same nounce.

Gas fee is too low for above transaction. So it has been pending for so long time. It needs to release new trasaction with same nounce=220 in Metamask wallet.

By default, Metamask, it doesn't allow user to customize nounce value. You can tune on the switch as below.

Now, you can give a value to nounce when creating transcation. And please note you need to higher priority and base gas price than pending txn to make sure new txn can be traded on priority.

Same method be applied in other chain,e.g. Polygon etc , when you want to replace pending transcation.

Sometimes, some txn is pending on Metamask not on chain. You can switch network and switch back. The txn would be cleare automatically. Or you can reset wallet. It is very safe, I reset my wallet couple of times. ：)

Sometimes, transaction has been pending for mins, even days due to low gas price on ethereum. If this happen, new transaction will be pending since old transcation has lower nounce thant new one. EVM package transaction following nounce for certain wallet.

For example, if a wallet release two trades, one’s nounce 1, another is 2. Basically, trade with nounce = 1, will be packaged first.

So if pending transaction is there for long, it will block new transaction be traded. We can replace it with same nounce.

Gas fee is too low for above transaction. So it has been pending for so long time. It needs to release new trasaction with same nounce=220 in Metamask wallet.

By default, Metamask, it doesn't allow user to customize nounce value. You can tune on the switch as below.

Now, you can give a value to nounce when creating transcation. And please note you need to higher priority and base gas price than pending txn to make sure new txn can be traded on priority.

Same method be applied in other chain,e.g. Polygon etc , when you want to replace pending transcation.

Sometimes, some txn is pending on Metamask not on chain. You can switch network and switch back. The txn would be cleare automatically. Or you can reset wallet. It is very safe, I reset my wallet couple of times. ：)