Black slim remote

[wireless]

Hi, I can't seem to control the volume with my remote anymore . And I have no sound coming from my tv anymore?? Unless I use a app on the tv it self but when I have it on the tv channels I can't hear anything. Please help me out!

More... (https://forum.telus.com/t5/Internet-TV-Home-Phone/Black-slim-remote/m-p/73681#M11924)