No sound when playing Pandora on my TiVo box on an LG TV

I am playing PANDORA on my LG TV using the TiVo PANDOA App.  There is no sound.  I have sound everywhere else including the TV, Netflix, Amazon, YouTube, etc.  

My Astound Cable Company suggested I reboot my router, cable box and TiVo Box.  I did and still no sound.  They referred me to Pandora Customer Support.  Pandora does not have phone support, so I entered my support request on their web site for help.

Does anyone have any suggestions?  I do not know when Pandora will respond. Thanks.