I just purchased a garmin edge 1030 and paired successfully the sensor on my bike .
but the cadence data field remained at 0.
the speed came from GPS and when I tried to disable GPS, the speed stayed at 0.
the sensor is a 2020 Suunto speed and cadence sensor . When paired the two logo speed and cadence are shown .it is an unique device . I tried it again on the suunto watch and all was ok.
this sensor was paired through BLE.
edit ok solved the problem the sensor must be added as speed/cadence sensor I added it under cadence