To learn how to get XAU into your account, please see our article about exchanging USD to XAU.
Exchanging XAU to USD
Tap the "Exchange" icon at the bottom left of the app
Tap the red SELL button on the right side of the screen
Enter the amount of XAU or the dollar amount you would like to exchange for USD
Confirm the amount you want to exchange and tap "SELL" again. You will have 15 seconds to confirm the exchange or you will be timed out and asked to re-submit the exchange.
Once confirmed, you will be given a confirmation code and the amount of XAU exchanged to USD.