Breathing Band- Red Alert False Alarm Report

I was woken up by a red alert alarm at 1252a this morning. I almost had a heart attack when sprinting to my babies room to find her breathing and moving just fine. Her band was on as instructed, the camera is in the right distance and we have plain sheets on. I am hoping it was just a system glitch and I pray we don’t get any more false alarms because they are frightening. We’ve been using it for a week now for naps and at night and haven't have a problem. Is this normal?