Ok i know this reads like a bit of a comp but i've just successfully redeemed and can confirm that you will definitely at least get a $5 gift card pending validation.
What happens is you buy any one of the 2 styles (green or red Tomato) of Mutti stir-through sauces 280g available at either Coles or Woollies, fill in the form and upload the receipt, and you will get a new screen to spin a wheel with the $5, $10, $50, or $100 options (I got $5 on the two times I did for the 2 receipts I had today). It will then say congratulations, etc and it will take up to 2 days to validate. You will get a e-gift card for the chain you purchased from, however I recommend to buy them at Coles as they are currently half price at $2.25 edit: our good friend doweyy has pointed out that it's now Woolworth's turn for half price this week, so it's kind of like getting free sauce and making $2.75 profit.
You can redeem once per transaction up to 4 times for a household, and can purchase until 28 Feb but claims run until 7 March.
Let us know in the comments if anyone manages to snag a $100 card!
Full T&Cs:
Conditions apply, see www.muttipesto.com.au/terms. Starts: 3/2/21. Purchase by: 11:59pm AEDST 28/2/21. Enter by: 11:59pm AEDST 7/3/21. Limit 1 entry per transaction; 4 entries per person & per household. Retain receipt/s. Instant prizes: $100 Coles or Woolworths Grocery eGift Card; $50 Coles or Woolworths Grocery eGift Card; $10 Coles or Woolworths Grocery eGift Card; $5 Coles or Woolworths Grocery eGift Card (see terms for details). Promoter: Mutti Australia Pty LTD (ABN 476 330 842 69) of 87-103 Epsom Road, Rosebery, NSW, 2018. Permits: NSW TP-00561 ACT TP20/01680 SA T20/1491
Yes same happened with me. I was careful not to send the same receipt in twice so I think they made a mistake.