I have a Forerunner 945, natch. About 2 years ago, if I went up and down the stairs, it stopped accurately counting. When I looked at the altitude widget at the time it was bouncing all over the place. Now when I look at my altitude widget it gets 0 readings. If I do a run or walk, it uses the GPS to get altitude information. But otherwise stair climbs do not count. Is there anything I might do to try and fix this? Otherwise is this something that can be repaired? (And where? there doesn't seem to be any repair support on the main Garmin page)
Thanks!