But you recovered it right? Please re read my post. If it is a flyaway, falls in the ocean, or other situation where it cannot be recovered, they will deny warranty because they don't have the log from the aircraft. They will not accept a Litchi log on your device.
Here is a quote from their rep on the DJI forum:
So if there was a malfunction of the aircraft and it is lost and you are using Litchi then there is no warranty as DJI cannot perform a flight analysis. or if your aircraft crashed from 1,000ft and was totally destroyed then they cannot analyze the flight data recorder so if you used a 3rd party app for that flight then there is no warranty.