My App use PIN-based authorization (https://dev.twitter.com/docs/auth/pin-based-authorization), and the users are forced to sign-in in twitter to can get the Pin page.
So the flow must be:
My App => Twitter Sign-in page --> Twitter pin page
With 2 step verification process, the flow should change but only on twitter side
My App => Twitter Sign-in page --> Twitter enter code page --> Twitter pin page
But that is not happening, Users never receive the code or the code page.
I missing something?