I bought the Spark 3 + Headphones a few months ago, around April. I have only used the headphones for running a few times, I mostly use them when cleaning at my job. I have never ran with them in the rain or gone swimming with them but they have stopped charging and will not power on. I never had a problem until the last 2 weeks, always paired quickly and worked perfectly so I'm confused as to why they have stopped working. Any information would be appreciated.