Update: It appears that their servers are quite slow with people reporting they are unable to log into the app, but can after trying again later. It appears the 1000 limit outlined below might not be a hard limit.
Limit one complimentary 12 month (8 issue) digital subscription to GQ Australia per customer. Available to the first 1,000 customers to activate their complimentary digital subscription. Offer ends by 31 March, 2018. Available on all Apple iPad and iPhone devices with iOS8 or greater and also available on all Android tablet and smartphone devices using Android version 4.4 or greater. The first digital issue entitlement of the selected title will commence with the most recent issue on sale when the subscription is processed. Free gifts and tip-ons that may be available with retail copies are not provided with subscriber copies. This offer for the participating title in this promotion is not valid in conjunction with any other subscription offer/promotion for this title. Existing digital subscribers to any of these digital publications will duplicate their digital subscription.