Right Life P3i Bud not working

My right ear bud is not working. there is no sound through it, and no button presses on teh device appear to do anything.

I’ve attempted to follow the printed reset commands… holding reset button while buds are in open case for 10 sec… but where the instructions say hold until the led flashes red… that never happens. i don’t believe the case led will ever turn red.

Not sure how to continue troubleshooting and diagnosing what is wrong with the right bud