One account for the website and the Android app.
Shown to you in the app. It is also the basis for your public handle.
Used to confirm your account and to recover it. One account works on the website and the app.
At least 12 characters. Longer is better than complicated.
Only if a friend invited you. You can leave this empty.
Your account starts unverified. Confirming your email address unlocks withdrawals, and the link is sent straight away.