The cause of a "replaced transaction" is the following:
You sent one transaction with a low gas price before sending a follow-up transaction (with the same nonce) with a higher gas price (i.e. miners’ fee). The miners picked up the transaction with higher miners' fees, so the transaction with lower miners' fees was replaced. (The Nonce values for the two transactions are the same.)
You can click on "Go to Etherscan for more details" to see all the transactions in and out of your wallet and decide whether to re-initiate a new transfer based on your needs.
Click here for an explanation of this status.