I'm using Sign In with Apple and requesting both .fullname and .email.
The first time I sign in on any given device, the callback to my app has an authorization credential that contains an email address and a fullname, as expected.
However, any subsequent login on the same device does not return either the email address or the fullname. All I get is the user ID string.
The server I'm working with requires an email address to log in, so I need that email address. Why does it only appear the first time?
Frank