When you turn on the scale, the Bluetooth connection is established immediately with your smartphone.
There is no need to go into the app settings to sync the balance with your phone.
To then see the balance data in your phone, simply click MY POWER then USE THE CONNECTED BALANCE (or "+" if you have already entered at least one data). Then the connection is made and the Bluetooth logo appears on the screen of the NutriTab.
Below the video tutorial: