You are new here, but did you read the instructions in the link posted in the very first post in this thread?
Steps to retrieve the TXT flight logs from an Apple device:
1) If you haven't installed iTunes on your
Windows/Mac
computer, then download it
here and install it.
2) Start iTunes.
3) Connect your phone/tablet to your computer via a Lightning cable.
4) Click the mobile device icon at the top of iTunes
(see the screenshot below) to access the contents of your phone/tablet.
5) If using the current version of iTunes, go to "File Sharing" --> "DJI GO 4" --> "FlightRecords"
(see the screenshot below) and click the "Save to..." button to copy that folder to your computer.
If using an old version of iTunes, you'll need to access the "FlightRecords" folder from the "Apps" section of iTunes instead
(see the screenshot below).
6) Open the "FlightRecords" folder on your computer and locate the appropriate TXT file.