If you want the more precise mission for construction progression, a drone with RTK will be much better. The drone will be much consistently much closer to the same exact coordinates of each waypoint.
But you can just use what you have and do...
There is always a reason behind any drone incident.
Drones don't "just decide to take a bath".
You'll never understand the cause of your incident if you never make the effort to find out about the incident.
Your app has a "black box" data...
yes someone did, i used the similar thing to convert litchi to RC2 missions
https://mavicpilots.com/threads/waypoints-how-to-back-up-export-import.135283/