I have read the Sync/Connection Troubleshooting Guide but it has resolved my issue.
My Forerunner 255 syncs to the Garmin Connect app, it shows some information on the dashboard like heart rate, steps, intensity minutes but it doesn't show the sleep tracking, HRV, VO2 Max or body battery etc. How do I get it to display all of the information? All of the data is visible on the watch but would like to see it in the app.