Troubleshooting the Uniswap Web App

• Subgraph downtime

  The Uniswap web app and the Uniswap info site rely on subgraphs from The Graph Protocol to source data for token and ...

• Swap failed

  While swapping on the Uniswap web app a “Swap Failed” error may appear.     Note: This error does not mean the swap...

• Approval transaction troubleshooting

  If an approval transaction is not working the way you expected, there are steps you can take to troubleshoot the erro...

• What is a sandwich attack?

  A sandwich attack is when a blockchain attacker sandwiches a swap between two transactions to make a profit. How does...

• Why can’t I see my NFTs on OpenSea after I purchased them on Uniswap?

  Purchasing an NFT on Uniswap means your wallet will be the owner of the NFT.   Opensea displays the NFTs in your wall...

• I accidentally sent funds to the wrong address

  If you accidentally sent tokens to the wrong address or to a contract address, your tokens may not be recovered. Once...

• How to check your NFT refund on Etherscan

  An NFT purchase can fail due to other buyers purchasing the same NFT. This is also known as a [execution reverted].  ...

• My NFT was stolen

  What is the Uniswap Labs stolen item policy? The sale of unlawfully obtained property is against our Terms of Service...

• Why aren’t my tokens showing up in my wallet?

  If your tokens are not showing up in your wallet after swapping with Uniswap, there could be two reasons why. You m...

• Why did my transaction fail?

  There are several reasons why a transaction can fail when using Uniswap.   Slippage Limits: The Uniswap interface set...

• The Uniswap web app fails to load

  If you are having trouble loading the Uniswap web app app.uniswap.org , there are a few steps you can take to trouble...

• How do I make sure my transaction succeeds?

  There are several ways to increase your chances of a successful transaction on Uniswap. Transaction deadline: The Uni...

• How do I resolve a network warning?

  You might see a “Network Warning” message appear when using the Uniswap Web app.     A “Network Warning” message can...