Your link and
@Mr_Orange 's link are both showing $25 / 1500 for me. Have tried to Superloop and Telstra connections, incognito, etc.
Possibly geo-targeted - what state are you in?
* Available to residential customers in eligible areas of VIC, SA, NSW, QLD and ACT. Offer Period and Reward: A referred customer who signs up to Red from 12.00am (AEST) on 19 September 2022, until the offer is withdrawn, will be eligible to receive one (1) $25 eGift Card or 1,500 Qantas Points once their electricity and/or gas account has transferred to Red. Referring Customer Eligibility and Reward: A Referring Customer will be eligible to receive one (1) $25 eGift Card or 1,500 Qantas Points once the referred customer’s electricity and/or gas account has been transferred to Red, provided the referring customer still has a residential electricity and/or gas account with Red and has paid any outstanding amounts on their Red account(s).