Wahoo Elemnt Roam 2. Today's ride as I was huffing up a 14% hill, my Wahoo said 0%! A couple of times during the ride I saw 1%, but that is about it. At ride's end I totaled 40 miles and 55 ft of climbing while my friends got about 2800. Distance, speed, navigation all worked ok.

Any ideas? Upload to RWGPS and Strava just show what Wahoo sent.

Waiting for a response from Wahoo.