Hi, I have the S8 and just got the Samsung Galaxy Active 2 Watch.
To remove the reminders telling me to move I did the following on the watch:
~Switch to off
*if you click on "position" it showed me the same spot that i was seeing the little running show
Imbhaving the same problem. Alerts are activated, I have them scheduled, but I dont get the alert. I only see it if I actually remember to check my drop down menu on my watch and see the icon. I need my vibration mode to work or I forget to get up and move when at work or home.