Hi,
I'm using an Edge 520 Plus, the software is up to date with version 5.70.0.0. I use it with a Decathlon HR strap and a left side 4iii powermeter. All the data from these devices shows correctly on the Edge 520 Plus, as well as in Garmin Connect and on Strava.
I am riding about 12 hrs a week, including twice a week 3hr+ rides. However my VO2 max and FTP have not been updated at all in both the Edge 520 nor in Garmin Connect. I have the option "Automatically Calculating FTP" switched on. For sure my FTP has gone up in the last 6 months.
Anyone got an idea how to fix this issue?