Give me a clue then as I can’t find a way and neither can Garmin :
Edited to add.
Just had another look on Garmin website and a chat function popped up.I was told you can only register a device by plugging it in.
Useless !! Garmin really need to join the modern world with their product support.
It helps if you chat with someone there that knows their arse from their elbow.
https://support.garmin.com/ms-MY/?faq=qnAPeyQFWf0M2pbcIDbrh9
Edit - you may need to restore the device to factory settings, as you can only register it over WiFi when you set it up for the first time. Or it may be too late now.
