"Torch" needs your permission to use the camera's flash
You'll be prompted to grant access to your camera because your flash is connected to your camera. "Torch" only uses the flash and never records anything. If you don't allow it the app won't work.
"Torch" doesn't have permission to access the flash
Tap the padlock in the address bar or go into your browser settings to adjust or reset permissions for this app.
Device not supported
Well this is awkward. It seems like your device doesn't support the torch feature yet.