Solved! My lg remote for the sound bar is not functioning properly, it acts like it doesn't work, but it allows you to change any 1

Solution
Get a new remote, or an universal one. Make sure universal remotes "know" your soundbar.

Your question is partially lost. Can you check, your your phone' camera, whether pressing volume buttons on your remotes lights the remote' IR transmitter? (hold the remote facing your phone)
Get a new remote, or an universal one. Make sure universal remotes "know" your soundbar.

Your question is partially lost. Can you check, your your phone' camera, whether pressing volume buttons on your remotes lights the remote' IR transmitter? (hold the remote facing your phone)
 
Solution