• If you are unable to make offers, make sure the signing wallet has approved WETH spending by the X2Y2: Exchange contract. You can check ERC20 approvals on Etherscan.
  • If you are unable to list items, make sure the signing wallet has approved the collection's transfer by the X2Y2: ERC 721 Delegate contract. You can also check this on Etherscan by selecting the ERC721 tab.
  • To troubleshoot other methods, store the TransactionResponse that is returned. Then use TransactionResponse.wait to get a TransactionReceipt which contains the transaction hash. You can then manually find this transaction and see what went wrong.
  • For all other issues not covered here or in the error codes above, get help or submit a bug report at our Developer Hub.