You need the "spd/cad" option and not the "speed and cadence" option.
Spd/Cad is a single unit sending both speed and cadence.
Speed and cadence is 2 separate units. One sending speed the other sending cadence.
I saw pepole advising to paire with "cadence and speed" but I only got "cadence/speedOn the Edges the GSC10 is type "Spd/Cad" so I think you have the correct setting. If you are getting cadence and the green test light flashes to show speed is working you should be getting speed too. Does speed show when you spin the wheel?
On the Edges the GSC10 is type "Spd/Cad" so I think you have the correct setting. If you are getting cadence and the green test light flashes to show speed is working you should be getting speed too. Does speed show when you spin the wheel?
It could be that the GSC10 is not triggering consistently because of poor magnet alignment. There is a line on the speed arm. The magnet should be aligned with it and the gap should be 2 to 5 mm.