My Samsung - 65" Class S90C OLED TV will not play sound on Sonos Beam

I had Best Buy Geek Squad set up my TV and Sonos Beam. It worked fine for a week. Now I cannot get the TV to play sound through the Sonos Beam.

I have gone through the setup several times

1. Unplug everything and replug into outlet.
2. In the Sonos app I followed the instructions
   1. Connect HDMI cable to Sonos Beam
   2. Connect HDMI cable to HDMI ARC port
   3. Clicked the ‘Connected to ARC’ button
   4. I’m told to ‘Use your TV remote to turn on ARC Mode in sound settings’ - I go to TV and tried steps 3, 4, 5 several ways.
   5. I Click on ‘Test Connection’
   6. I get message ‘ARC Mode not connected’
3. In the Samsung TV I go to All Settings > Connection > External Device Manager > Enable ‘Anynet+ (HDMI-CEC)
4. Going to All Settings > Sound > Sound Output > (My only choices are TV Speakers, Receiver(Optical), and Bluetooth) - I kept it a TV Speakers.
5. Going to All Settings > Sound > Expert Setting > I have tried ‘HDMI eARC Mode both as ‘Off’ and ‘Auto’ - When I pick ‘Auto’ the Sonos Beam plays but the TV remote will not control the volume and when I shut the TV off and turn it back on the sound reverts to TV. I can only get sound through the Sonos Beam by resetting HDMI eARC Mode to ‘Off’ then back to ‘Auto’