There was a coupon on my maccas mobile ordering app with a "$5 my maccas reward" good until 29/6. On mobile, will post screenshot if required later
*From comments it appears that the offer is available for most, but some users aren't receiving it. Marked as targeted. Re-check the app as the offer may appear in the future.
I agree that the ui/ux is pretty poor, my bet is that the budget went into the product photos and backend that supports mobile ordering across the restaurants.