I everybody.,
I just bought the FR255 but none of the sensors work. I mean it doesn't count the steps, the Heart Rate and Pulse Ox don't work also when I try to start an activity. Moreover when I start an activity also theGPS is always red (can't acquire it).
Should I have to do something special? (The version of the watch now is 16.19, before was 9.15 but in none of them they work.