just received a withings smartbody analyzer scale and…my mx5 doesn’t want to pair :(

No issues at all with an iphone and another android device

I’ve tried with flyme 4.5and 5.1.2G

I’ve followed the instructions, rebooted, everything…no way

The phone pairs the scale using bluetooth. Then I’m supposed to open the app to complete the setup but the connection is apparently lost at this step.