- What is a user merge and how do I prevent it from happening?
- Why does username or other user credentials need to be unique across all of my users?
- Do I need to send up some unique ID for my user if they haven't logged in but are still using my app anonymously?
- Why do I need to pass in username/email or other user credentials when a user logs in, or registers, if I'm already setting them in my applicationDidBecomeActive?
- Why do I need to pass in username/email or other user credentials in my applicationDidBecomeActive?