If you run out of gas when exchanging Ethereum, it's similar to running out of gas when driving a car, except imagine that you reached your destination without being able to get out of the car.
If you see the message "out of gas", your exchange was successfully completed. However, there was an error sending the ETH to you because the receiving address was an ETH contract address that requires more gas than we attach to a transaction. Some contract addresses are just too expensive. We will need you to contact us with an ETH address that does not require a specific gas amounts.
Contact our crypto specialists if you've experienced an exchange or a return with this error.