I hope you can get it charging again, hopefully another cable/charger combination helps. Remember that you can check the battery level in the app. See my earlier post:
My current Paragon troubles are as follows: On a couple occasions, I have set the probe for 185F in a gallon of milk for the initial heat-up for yogurt. Both times it has hung around 180 while the milk boils furiously. I'm a little befuddled by this. In the past I'd get the unit beeping at 185, correct milk temp, and no boiling/boil-overs. The probe was around 35-40% battery, maybe a recharge will help. If anyone has any other ideas or similar troubleshooting experience, let me know.