Why does the dash cam shut down shortly after the engine is turned off or before the time setting value is reached?

Why does the dash cam shut down shortly after the engine is turned off or before the time setting value is reached?

Please use a multimeter to measure the voltage of the yellow line B+ of the "auxiliary fuse holder" half an hour after the engine is turned off to see if it is lower than the voltage setting value. Please readjust the voltage setting.