Troubleshooting Errors

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Remember, if there is someone made a buy/sell in the chart,
it means trade is possible.
INSUFFICIENT_OUTPUT_AMOUNT
It is a slippage issue.​
TRANSFER_FAILED
It is NOT a slippage issue. You are trying to buy more than the limit, 10% of price impact.
TRANSFER_FROM_FAILED
It is NOT a slippage issue. Check sell checklists​​
transfer amount exceeds allowance 
approve first
subtraction overflow 
your balance is lower than how much you want to spend
invalid input value 
type only number and dot in the input
cannot estimate gas; transaction may fail or may require manual gas limit
This happens because Pancakeswap and Poocoin use a subpar algorithm.
Using desktop Chrome + Metamask extension is recommended.
no keyring found
Refresh to set correct wallet address
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Buy
Sell
Set exact number in the BNB input (or other tokens to buy $WEB3) 
Don't set exact number for the $WEB3 input.
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We recommend using swap system in our website​
Set exact number in the $TWEP input
Don't set exact number for the BNB input.
​
If using poocoin, don't use auto slippage.
Use manual and set a higher slippage.
If still not working, refresh the page and try again.
If an error not listed here occurs,
or if you are still having trouble even after following these steps,
then contact @ALLCOINLAB with screenshots.
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Last modified 1mo ago

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Outline

INSUFFICIENT_OUTPUT_AMOUNT

TRANSFER_FAILED

TRANSFER_FROM_FAILED

transfer amount exceeds allowance

subtraction overflow

invalid input value

cannot estimate gas; transaction may fail or may require manual gas limit

no keyring found