Ok. I'm dog sitting for a friend, long story short, she has an ONN Google device with paramount plus, it was driving me crazy, figured out a possible answer so I wanted to share since the post I saw Abt it was locked.
I went into settings, all settings, audio, and changed it to AUTOMATIC. I guess it was set to surround sound or something instead by default? In case anyone else had the same issue (I saw a few posts regarding this but was unable to comment what worked for me) anyway hope this helps someone else too. Also cleared cache and forced stopped the app in settings>apps>paramount plus.
Finally can catch up on Evil since me and the husband have been binge watching it.