I can't say that I have that problem. I did notice that if I get off the scale without waiting for the readout to go away it does not sync my fat % to the Fitbit app. I don't know why.
Best AnswerI have the Renpho scale and I'm really happy with it. It sends the weight to Fitbit, then Fitbit would send the weight to my Noom. As of today, I'm quitting Noom and sticking with Fitbit. I've had the scale for a few months and have only had to charge it once since my initial charge. My grandson and I both use it and it keeps track of who is who.