I recently upgraded my phone to an 11, passing my 6sPlus to my daughter, who has an icloud account on my family plan, and passed her SE to my son, who has an account as well. I just added a phone number for him. So, things were fine but today, when turned on his phone, his icloud id and name under settings, is gray'd out and not active. I cannot access his or even change to mine to enter anything.. His app store widget is no longer there either. I was adding Life360 and could not find the app store button and then realized nothing icloud related was "active" on his phone. Any idea what has happened?