I purchased a pair of EP-B58 headphones on May 14, 2020. Two days ago they completely stopped working. I charged them overnight and the blue light is on (indicating full charge), but I cannot turn them on or reset them. This is similar to the issue reported at this link AUKEY EP-B58 Will not power on or reset.
I also can’t find a copy of the user manual anywhere, but more importantly I would like to have these headphones working again.