Set up my new Samsung TV with an older Samsung Soundbar (HW- D450) works great through the optical port with the smart remote that comes with the TV but can't change the volume with the standard TV remote that comes with the TV. It's driving me a bit nuts tbh 🤪. When the volume button is pressed on the standard remote the + symbol comes up on the TV the same as the smart remote but the volume doesn't change. Anyone got a fix for this? Please help!! Thanks!