Welcome to the Community! We appreciate you posting for the first time and would love to assist you with this.
Can you please let us know if you are connected via a standard HDMI or HDMI ARC port on the TV? I'd also like to know if you have tested an optical connection with the TV at all?
I'd recommend checking out this video here to ensure that you have the system set up correctly.
We look forward to hearing back from you with further information on this.