Garmin Connect for Android impossible to change First Day of the Week in "Settings" - "User Settings" to Monday or anything else

I have the exact same issue. My app is also set to metric but the weather shows as Fahrenheit, incredibly frustrating.

Same issue here.  Changing to metric has no effect and cannot update first day of week.  Continually get 'An error has occurred'.

I had the same problem when I bought the vivoactive 3 a month ago.  

I solved the problem by logging into my account online and changing it to Monday from the settings there. The Connect app has shown Monday as start of week since then.

Hope this helps.

I have had the same problem and needed Monday to be my start date for a training programme, so thanks for this. All sorted now

I have the same issue and also "solved" this by changing it by logging into connect.garmin.com.

As this is clearly a bug, is Garmin support listening/reading here or how do they want us to report bugs?

I want to change the first month of the year to February and can't either.  My boss won't let me change the last day of the week to Thursday for some reason.  I guess I'll just have to stick with the calendar.