I've had my Charge 6 since December. Initially pairing it was a pain but Smith sailing since then.
Recently my watch died after not having access to power for a couple days. When I turned it back on the time was off by over 3 hours and it wouldn't sync with my phone. I tried restarting the app, restarting my phone, and restarting the watch. No dice.
Next I tried forgetting the device and reconnecting. My app will say "Device found" and you check my watch for a pairing code, but no code shows up.