Got a Venu 2S for Christmas. Set it up for 2 days later. Worked for one day--during that one day I LOVED it. And then, suddenly, zip--stopped recording steps, heartbeat, O2, respiration, everything. Clock works but that's basically it: ZERO data. Doesn't vibrate anymore either. I reset to factory settings, deleted app, started from scratch. Still nothing. Basically sensors stopped working after just 3 days. It syncs with app but is recording ZERO data. Can I get a replacement (I have receipt) or should I just return and share my awful experience on social media? Really, really frustrating experience. LOVED the watch for the 10 seconds it worked--but just so frustrated to have spent HOURS trying to get something to work that clearly doesn't.