I have 3 of the v2 Camera’s. All with 32Gb Memory cards. One of them should have recorded an intruder. When I selected that Camera, then “View Playback”, there were a few earlier Green Spots indicating recording occurred. But Very large (at least 98%) with No recording or even a 12 second Event. Since I tried to look, the recording is good and 100%. It is like it was asleep and blinked a few times before I looked. Example I was interested in 11:30 - 11:45AM range. I’m doing this at 2:00PM the only recording that existed was 7:39AM and since my checking at 2PM.
The First time I actually needed to see a recording for an Intruder, it did not exist 
.
4 days before, I did update the Firmware to 4.9.8.501 and also restarted the cameras.
The other two Camera’s seem to have recordings several Days old and all OK.
Suggestions? Recommendations?
DavidK
Welcome to the forum, David!
Cut to the chase:
Many users set Playback to Continuous to avoid potential anomalies like this.
The long and winding road:
Sounds like you have Local recording to micro SD Card set to Events Only.
What is your Motion Detection Sensitivity setting?
The 12-sec cloud Events operate off of that setting, while the SD Playback Events are fixed at maximum sensitivity, so Playback should capture things cloud Events might miss (because of a lower setting.)
Do you have a Detection Zone set?
Etc, etc, etc…
I’m stopping short, cuz I’d rather have a root canal than do this exhaustively and have one of the real experts here come along and post the full story in an instant like it’s boilerplate. 
They do this stuff in their sleep, my friend. (Imagine sleeping next to them!) 