Yes, payback points can be earned on your ticket purchases.
Website:
Once you reach the payment page, at the bottom to get to see an option which says 'Earn Loyalty points' Once you select it, enter the PayBack card number to earn the loyalty points.
Application:
On the app, at the 'Hamburger' choose settings.
Once you under Settings you get an option for PAYBACK, add your PayBack card number or Payback registered mobile no. to earn the loyalty points.