The problem is that I've gone through the API documentation of authy. Now there can be trust issues with the users to provide me their PII.
So I tried the Non-PII approach. For which I need a QR code to be scanned by my users.
Even though I've followed the exact process mentioned in the documentation after doing a test-drive of my application I tried scanning the QR code which gets generated in a php file that I've made. However the authy app after scanning the QR code says:
Account couldn't be added. Please contact your service provider
P.S. I will provide the PHP code that I've made which generates the QR code. However I just want to know if this is a known issue about Not being able to add an account to my Twilio authy application.