@AndyC77
Make sure you're using the included USB cable and a compatible 5V 1A USB charger. Once connected, the camera’s LED should flash amber quickly for about 3 seconds. If you don’t see this, double-check all connections and try another outlet or charger.
The camera requires about seven and a half hours to charge fully. After a full charge, press and hold the power button for 3 seconds to turn it on, then observe how it functions.
Additionally, please verify whether proper waterproofing measures were implemented when connecting the camera to the solar panel. Water ingress may lead to hardware failure. How to connect Tapo Solar Panel to compatible Tapo devices with proper Waterproof Gasket