A:
To enable Overwrite mode:
1) Open the app.
2) select "Device Management" in the bottom right.
3) Select your camera.
4) You will be taken back to the main menu, then select "Recorder Setting" in the top right.
5) Press "Setup" in the top right-hand corner of the screen.
6) Slide the Overwrite toggle button to the right to enable Overwrite mode.