had my system for 5+ years, never had an "SD card full" issue before. On my second year now with the new L cams I added on to my system. Twice now in the last month have had the SD card full issue shutting an L cam down. Shut the unit down, pulled the card, checked it and found it wasn't close to full. Put the card back in, turned cam back on, seemed to work good for a week, then did same thing again this week. Bringing another card with me next time I go there, maybe that'll stop it from happening. At that time, the daily report didn't show the cam offline or missing tho.
Also, I've had 2 days this year where my report I have sent daily never came thru to my email, kinda weird.