Everything in the app is set to german but the watch ui is still completly in english.
Any help is appreciated.
Just had the same problem with setting up my mom's Garmin Lily. It somehow worked after I've set the language (which was set to English) to German on the Garmin Connect app, sychronized it, then set it back to English, sychronized it, and then set it back to German. Don't know why, but that worked for me. Maybe it helps you, too!