Keep trying. Change wrists and position, tightness and sleeping position. Sometimes it works great, sometimes only basic details, sometimes nothing. It can be slow to analyze and sync. So often I don't see any data for an hour or so after I get up. Takes more than 3 hours of sleep in a night before it has a chance to give full analysis. Don't sleep in a position that you restrict blood flow to your arms or hands. If still you can't get a night of full details, contact support.
