I'm using linkedIn signin for my iOS app. After switching to OAuth2, the call back URI is no longer accepted as i keep getting the error 'invalid redirect URI'. The app URL scheme is called 'Paper' and URL identifier is 'com.Paper'. I understand that i have to set up a URL that begins with 'http://' or 'https://' on linkedin developer page and the address has to match with the callback URI. What would be the Authorized Redirect URLs for the linkedin developer setting?