Hi there and welcome
Can you give me the exact model of the TV please. And are you playing the sound via the TV or a stereo unit connected to the TV?
It is a one time fee if you do not sign up for the monthly cost
Can you please remove the power to the TV (so unplug it from the power socket).
Then on the actual TV, hold the power button for 60 seconds then release.
Then wait 10 minutes, connect the power again to the TV, turn it on and tell me please if it is now operating correctly.
Let me know the results please