I followed the procedure and I tried to get to systems/ units on the watch put it says to use the Garmin Connect. When I do it in Garmin Connect, it works in the apps but not on the watch Even after I sync it.
any idea?
You have to do it on the watch: https://www8.garmin.com/manuals/webhelp/GUID-D93137A9-B374-4A24-8A4D-A66C9AC91265/EN-US/GUID-4E76487B-6F62-415D-9419-C7E4292F5BC6.html