To activate and operate a new Spypoint Link Micro LTE camera, you need to use a new & formatted Micro SD card. Also, for the camera to function properly, Spypoint suggest using a Micro SD card between 2 and 32GB. Higher than 32GB use a different file encoding system that is not compatible with Spypoint Link Micro LTE cameras.
If you will use more than 2-32GB of Micro SD Card (Class 10) with your Link Micro LTE camera, the camera will only blink Red in the status. So try to avoid that for the best performance out of your camera.