I am using Zwift as a recovery tool for a severe calf muscle tear. So I am riding very slow, maybe 30 watts, for 5-10 minutes at a time.
In the game, everything seems fine (everybody passes me). I save the activity when done. However, it doesn’t upload to Strava nor to Garmin Connect. In addition, even though the rides appear on my Zwift profile, they are incorrect–durations are a few seconds, not minutes. If I download the fit files from Zwift, they are consistent with what Zwift says, i.e. a few seconds, not the 5-6 minutes I actually rode.
This only started after the injury, prior to that I never had a problem in more than a hundred rides.