To send Bitcoin from AmberApp:
1. Open your Bitcoin account by tapping the orange 'Bitcoin card' on the dashboard.
2. Tap the 'send' button on the bottom right of the screen
3. Tap 'Send Once'
4. Paste or scan the BTC address
5. Input the amount and confirm fee selection, then tap 'Next'
6. Once you confirm the details of your BTC withdrawal, swipe right to confirm
7. You'll receive a verification code via SMS. Enter the code once prompted in the app