Bought this 3 months ago.
I use this camera outside with an Adata 256 GB memory card inside. 

The camera seemed okay for the first few days after that nightmare had started. 

The camera starts giving the wrong camera tampering alert even when the view is not blocked. When the camera sees the road, it thinks the camera is blocked. Camera tempering is useful to prevent theft, and I had to turn that off for the wrong alert at night.

Now the real issue started. 
My SD card settings, 
I turned on loop recording and event-based recording.
Loop recording should replace the previous record when memory is full. But oh man! When memory became almost full, not totally. Full camera started behaving abnormally, like, 
Format SD card, SD card is missing by giving these kinds of wrong warnings, etc.
I suspected the SD card and contacted with dealer. They gave me another brand-new SD card, and the camera started working normally.
Again, after 2 months, the same issue is happening today. 
It is saying SD card is missing, No SD card, Format SD card, etc. 
and the Vigi camera app, and also the Windows VIGI security management ap,p is working abnormally. It sometimes says. Device is offline, SD card not found, etc. Though the camera's power delivery is perfectly fine.

I thought of downgrading the firmware, which is the last option. But I am thinking if TP Link will void my warranty if I downgrade. Besides, in the VIGI security manager(Windows), there is no option for manual firmware upgrade. So, the only solution should TP Link will fix the damn issue and give another firmware upgrade otherwise I have to throw the camera into the trash.

Irteza Rahman
Computer engineer & Software developer
contact: irtezamasud@gmail.com