Can't get email / name on login after revoking user account | React Native Firebase

On every attempt of login and logout, I receive email and user name from apple as long as I have not revoked it. But if I revoke, and then try to login again. In that case, I don't get email/name.

If I delete my apple account from device, and re login from settings. In that case, I get only user name on first login attempt in app. On subsequent logins, I get nothing. What could be possibly wrong with my flow?

My login code is as

import { appleAuth } from '@invertase/react-native-apple-authentication';
import auth from '@react-native-firebase/auth';
const appleAuthRequestResponse = await appleAuth.performRequest({
        requestedOperation: appleAuth.Operation.LOGIN,
        requestedScopes: [appleAuth.Scope.EMAIL, appleAuth.Scope.FULL_NAME],
      });
      // Ensure Apple returned a user identityToken
      if (!appleAuthRequestResponse.identityToken) {
        Alert.alert('Error', 'Apple Sign-In failed - no identify token returned');
        return;
      }
   

      // Create a Firebase credential from the response
      const { identityToken, nonce } = appleAuthRequestResponse;
      const appleCredential = auth.AppleAuthProvider.credential(identityToken, nonce);

      // Sign the user in with the credential
      const res = await auth().signInWithCredential(appleCredential);
      console.log(res.user.email) // returns email

The revoke code is as follows

import { appleAuth } from '@invertase/react-native-apple-authentication';
     import { getAppleAuthorizationToken } from '../firebase/cloudFunctions';
     const authTokenJWT = await getAppleAuthorizationToken(); // call to get JWT
    appleAuthRequestResponse = await appleAuth.performRequest({
      requestedOperation: appleAuth.Operation.LOGIN,
      requestedScopes: [appleAuth.Scope.EMAIL, appleAuth.Scope.FULL_NAME],
    });
    const { authorizationCode } = appleAuthRequestResponse;
    const config = {
      headers: {
        'Content-Type': 'application/x-www-form-urlencoded',
      },
    };
    const authTokenBody = {
      client_id: PACKAGE_NAME,
      client_secret: authTokenJWT.data.jwt,
      code: authorizationCode,
      grant_type: 'authorization_code',
    };
    const generateAuthTokenUrl = 'https://appleid.apple.com/auth/token';

    const res1 = await axios.post(generateAuthTokenUrl, authTokenBody, config);

    const revokeTokenBody = {
      client_id: PACKAGE_NAME,
      client_secret: authTokenJWT.data.jwt,
      token: res1.data.refresh_token,
      token_type_hint: 'refresh_token',
    };
    const revokeAuthTokenUrl = 'https://appleid.apple.com/auth/revoke';
    const res2 = await axios.post(revokeAuthTokenUrl, revokeTokenBody, config);
   // res2 is empty with status 200.