You can check code here or view the page source.
➡️ 1: Connect your wallet by clicking below.
➡️ 2: Check your metamask that you are connected to the sending chain.
➡️ 3: Paste your transaction hash below. Only the hash, no explorer links.
➡️ 4: Clink on this button to check if refund is needed.
➡️ 5: Check your metamask that you are connected to the sending chain.
➡️ 6: Click on the button below to claim the refund if refunded.