title: Apple SignIn issue while submission on AppStore
body: <p>We are using AppleSignIn in our Flutter App, it works fine in all conditions from our side, but we are trying to launch the App in Apple Store, but the developer team keeps on rejecting that the Apple Signin not works.</p>
  <p>We had tested with both debug and release mode, everything works fine.</p>
  <p>According to the error message shown from their side, throughout our understanding,
  the below code returns email = null, even at initial login</p>
  <pre><code>final credential = await SignInWithApple
                                          .getAppleIDCredential(
                                        scopes: [
                                          AppleIDAuthorizationScopes.email,
                                          AppleIDAuthorizationScopes.fullName,
                                        ],
                                      );
  print('mailId-----${credential.email}');
  </code></pre>
  <p>Plugin we are using,</p>
  <pre><code>sign_in_with_apple: ^3.3.0
  </code></pre>
  <p>But we had searched all in internet, that none of the condition which return null at initial condition, but through our code, we printed a Toast, so that we are saying that at initial condition it may returns null from Apple Team side, but they're not letting us know the exact condition of that issue,</p>
  <p>We are searching for more than a week, expecting a help!
  Thanks in Advance.</p>