Just got a Vivoactive 3 Music, updated the firmware to the latest, and haven't been able to get the Wifi to work at all.
It's able to see the networks just fine, but when it tries to actually connect, I'm seeing a 'Connection Failed'.
I've tried three different router types:
1) Apple Airport Extreme
2) D-Link
3) Apple iPhone 8 in Personal Hotspot Mode
I've also tried with and without WPA password protection. Unfortunately neither is working.
I have a 645 Music and the Wifi works okay, so I don't think there's anything wrong with my setup (e.g. multi-path interference etc).