Trick to Apply BOOKMYSHOW WINPIN to old accounts:

1. first open your old account and book your movie tickets and select seats and proceed to next page.
2. below you find option to edit email and mobile number.  just change the email and mobile number  (you can enter any random number but enter your own new email id as ticket would come to email)
3. now click on avail offer and enter your winpin code.
4. boom your winpin code is successfully applied.