What happens if I send the wrong amount or the swap fails?

If the amount you send does not match the expected range, ChangeNOW either adjusts the output amount to match the rate or waits for the correct amount. If a swap cannot be completed (for example, the network rejects the transaction), the funds are returned to the sending address or to a change address you provide — minus the network fee already paid to the blockchain. In practice, failed swaps are refunded automatically; unusual cases are handled by support within 24–48 hours.

A typical ChangeNOW swap is a five-step flow: pick the pair, choose FixRate or FloatingRate, enter the receiving address, send your coins, and wait for the exchange to be forwarded to your address. Most swaps complete in 5–30 minutes depending on network congestion, and the exchange status is trackable in real time on the official site.

Two habits prevent the vast majority of swap problems: always set a change (refund) address, and start with a small test transaction when trying an unfamiliar pair. If a swap fails, the change address is where ChangeNOW returns your funds, so leaving it empty or wrong is the most common user error.

Bottom line

If the amount you send does not match the expected range, ChangeNOW either adjusts the output amount to match the rate or waits for the correct amount. For the full picture, see the complete ChangeNOW FAQ covering fees, KYC, limits, refunds, supported coins, and more.