You have download all of the DJI apps from their website now, they no longer post them in playstore or Appstore. Any dji mini drone is not that old, but that's coming from someone who still flies a Mavic Pro and a Mavic 2 Zoom all the time. Still...
It may show yet, I've had them lose things in the past and it always eventually showed up. If not, it would be DJI's problem since they are the "shipper". They would have to file a claim on it, however they make you wait 30 days before they can...