1) Please confirm whether the camera is powered off, the SD card is working normally, and the SD card will not continue to record after the device is powered off.
2) Verify that the SD card is correctly inserted into the camera: Without a Micro SD card, the camera can work but cannot record video, can accept notifications, but cannot view the alarm video. About 10 minutes after inserting the card, you can view the video and play.
3) When the SD card space is almost full, the oldest videos will be deleted automatically, freeing up some space to store new videos, no need to replace the micro SD card.