no streaming on contour, sometimes video but no sound

streaming has just died in the last two days. was able to watch tv on computer in bedroom, have been for months with no problem.  Now I can sign on to contour and get the tabs for saved, live tv etc and click on them and they do nothing.  did a reset to everything and still doesn't work.  Cox tech didn't have a clue how to hep me.  my next thought is run a ethernet from modem through wall to bedroom and plug in.  I feel like this is their way to get me to pay more for more GBs. I have 3 now