P4P goes away and desapears. What can I do to figure out what happened?

[Guilherme]

My P4P was flying 1,5 km away from me at 50 m when it just disconnects and desapears,. Can anyone help me on this?

 

[Meta4]

My P4P was flying 1,5 km away from me at 50 m when it just disconnects and desapears,. Can anyone help me on this?

Your app has a "black box" data recorder that can often explain what happened.
If you want to learn from the experience and be able to avoid similar occurrences:

Go to DJI Flight Log Viewer
Follow the instructions there to upload your flight record from your phone or tablet.
Come back and post a link to the report it gives you and someone might be able to analyse it and give you an understanding of the cause of the incident.