Step 04
Stand on the plate, open the app
That is the whole pairing procedure. There is no power button and no device list.
The plate wakes under your weight and starts advertising over Bluetooth LE. The app looks for it when a session starts and connects on its own, usually within a couple of seconds. It then weighs you, because your pull is measured against your weight: stand still for a moment.
Do not pair it from your phone's own Bluetooth settings — it is meant to connect from inside the app only. On Android, allow your location when prompted, and "Nearby devices" as well on Android 12 or later; the operating system puts Bluetooth scanning under these permissions. The app does not use where you are.
Nothing happening? The plate has to be under load to wake up. Step on before you look.