Check your warranty as what the cause is, and I'm an electronics designer is not serviceable, This complaint is not new and the maker should be aware of the problem. They swap them out or just replace them AFAIK.
For the past few months, my bluetooth earbuds (TaoTronics) have been having volume problems. One side will be louder than the other, and I then adjust for it in the iPhone accessibility settings, but a few days later the earbuds "fix" themselves and the volume is even in both ears with no adjustment in my settings, but then a few days later will change AGAIN and be playing louder in the other ear instead. What's causing my headphones to change the volume so often? Is there any way to fix it other than repeatedly adjusting the volume balance in my iPhone? Should I just bite the bullet and buy new earbuds? I don't sleep with them or put any pressure on them, just heavy use (8+ hours). The volume difference is both on my phone and laptop.