Hold A + Home for 3 seconds to enter "Gamepad plus V3" mode.
ShootingPlus V3 is designed to work across different hardware setups. shootingplus v3 pc
If you are trying to use the V3 app to map keys while playing mobile games on a PC (via BlueStacks or LDPlayer), use the emulator's built-in keymapping tool instead of the ShootingPlus V3 app. 📱 Mobile Pairing (Reference) Hold A + Home for 3 seconds to enter "Gamepad plus V3" mode