I've purchased 2 pairs of Jabra Elite 65t earbuds & both have experienced the same issue; a firmware update is installed and then the left earbuds no longer play music nor show up in the app. They're still paired with the right earbuds since when I remove the left earbud, the music is paused but no music plays on it. On the 1st pair I assumed that it was damaged or defective but it also happened to the second pair. I prefer my tech to function as easily as possible,I don't have time to waste.