Venu 2 Auto Lap - Cannot Set To KM

I've set units to metric in the app but my Venu 2 is lapping in miles.

Have read the many other questions and answers, but none seem to work for my Venu 2.

I have set preferred units to 'metric' in the app.

I have tried navigating in the Venu 2 to 'Auto Lap' - I can see how I can change to parts of a mile, but there is no oiption to switch to km based laps instead of mile based laps.

App and watch are up to date on upgrades AFAIK.

Any suggestions?  Thanks in anticipation - John