I had similar problem on a Vauxhall Combo heater which worked only on setting 4. The answer was a new resistor matrix fitted into a connector just behind the heater body. It is tricky to reach but it works on al 4 settings now.
I bought a Toguard H20 Wildlife Camera in April 2021
The camera does not take "night vision photos or videos" The rest of the features work fine
I have seen that the infrared leds glow for a bit and then dim.
I put in brand new batteries(AA LR6 Alkaline), also I reformatted the SD card and tried the different video resolutions and short 5 second length. Also done a factory reset all without success.