On two of my V2 cams I go to the detection zone draw out the area that I want detected. Hit save. Maybe modify it and hit save again. Go out. Look at the camera. Go back and the only area that is saved is one little square in the top left corner. Everything else on the screen is blacked out as none-detection area. I have also tried restarting the camera with the detection mode off and then trying to say the detection area.
I’ve also got another problem with two other V2 cams. They have developed a purple Haze on most of the camera space. I have tried rebooting all cameras and disconnecting and resyncing them.
On the V2’s I’ve found that deleting the camera and setting it back up like a new camera solves lots of weird issues. Might be worth trying on one of those V2’s and see if it works.
Seems like yours should work across all cams if your version matches mine. I wonder what the difference is between the working and non-working cams.
Did you call into support to log and track your issue? We can only offer suggestions on the forum. Maybe someone else will have a better suggestion. Besides matching my setup, all of your cams are on the same network and some are not fully performing.