How do I bind my account?
1. Open the basic info page by tapping on the avatar on the left side of the screen.2. Tap the account button in the lower right corner.3. Tap the bind account button in the account management page.4. Login to your Google Play or Facebook account, agree to the permission request, then your game ID will be bound.5. If you need to unbind your account, then you just need to login to the same Google Play or Facebook account to unbind.