Offer is available to all cardholders who haven't purchased at Menulog using their eligible Visa card in the last 6 months. (from ts and cs)
Try stacking it with $15 off $30 Spend offer and see if it works.
DO NOT USE PAYPAL.
Please note that sometimes they can take a couple hours to deliver, so decide whether it is worth it for you to sign up.
Use this offer first, then on future orders:
Spend $25 at Menulog with a Suncorp VISA Debit Card, Get $5 Cashback @ Suncorp Feel Good Rewards)