When a trade fails or looks wrong
Why swaps fail, running out of gas, and how to avoid picking the wrong token.
อัปเดตเมื่อ 29 กันยายน 2569
A blockchain trade cannot be undone once it settles. Checking before you sign is the surest safeguard there is.
Check before signing
- The token address: there are many fake tokens with the same name. Pick from the list, or verify the official address yourself.
- The amount you receive: make sure the expected amount and the price impact look reasonable. A large price impact means there is not enough liquidity.
- The network: confirm your wallet is on the chain you intended. Assets sent on the wrong chain cannot be recovered.
My trade failed
There are three common causes.
- Not enough gas: you need the chain's native coin (ETH, BNB, MATIC and so on) in your wallet. With tokens but no native coin you cannot send a transaction.
- Slippage exceeded: if the price moves outside your tolerance while you are signing, the trade reverts. In volatile periods, raise the tolerance a little or try again shortly.
- Missing or insufficient approval: the approve transaction has not been processed yet, or the amount is too small. Try again once the approval is confirmed.
A failed trade can still consume gas. That is how the blockchain works and we cannot refund it, which we appreciate is frustrating.
I sent the trade but nothing happened
When the network is congested, confirmation takes time. Check the status on the block explorer. If it stays pending for a long while, you can use your wallet's speed up or cancel feature.
My wallet will not connect
- Check whether your browser extension wallet is locked, and unlock it.
- Several wallet extensions running at once can conflict. Leave one enabled and refresh.
- On mobile, connecting through the wallet app's built in browser is more reliable.
If you need help
Open a support request, choose Dex as the service, and include the transaction hash, the chain and the token pair you tried. One thing to be clear about: we will never ask for your private key or seed phrase, under any circumstances. Anyone asking for them is impersonating us, so never share them.
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