So I purchased a Qantas flight with my American Express Travel credit, however, unfortunately, this did not count towards me getting the Club Lounge healthy as it year, through Qantas.com.au 🙁
However you have some options
Purchase a flight with points and pay for the taxes on your card and this counts for a purchase 🙂
Purchase the cheapest refundable business class flight ,currently I see this as single trip from Melbourne to Adelaide for 700$ and then cancel it when they come through
Then : Within 1-2 weeks of purchasing selected Qantas products and services, two Qantas Club Lounge Invitations will be assigned to your Qantas Frequent Flyer account.