Only Polar devices will upload to flow.polar.com. If you want to upload to Flow then you need a Polar device.
All manufacturers including Garmin are the same way. Each manufacturer's website only works with their own devices.
Lots of people, myself included, are using Wahoo RPM speed and cadence sensors. They do both ANT+ and Bluetooth and so work with just about any head unit.
-Tim-
Last edited by TimothyH; 10-26-17 at 06:20 AM.