Welcome to Justanswer.com, my name is Dustin.I'm sorry to hear about the issue you are having, I will do my best to help you resolve it.
My apologies that no one responded to you sooner.. If you still need help, I can assist you with this issue.
Lets start by master resetting the Vivofit 3.. Heres how, and you have to be specific and follow these steps..
To get a full factory reset and will make the device, as new out of the box:
All data was erased, and device was unpaired.
Then, restart your Phone.
Then launch the garmin connect app.
Then, you must put the vivofit in pairing mode, follow step 2 on this page.
When the vivofit is in pair mode, you can then connect it to your phone through the garmin connect app on your phone.
If you get stuck or run into any issues , let me know.
I strive to provide great service, and greatly appreciate a 5 star rating clicked and submitted when you are satisfied.. I always answer follow up questions.Dustin S.Senior Technician and Network Switching Systems Operator / Maintainer.
Hello again, I havent heard from you for a while. Did you still need help with this issue or not?If you do not need help, please remember to click and submit a 5 star rating to show that I was able to answer your questions. If you still need help, please send a reply so we can continue working on the issue.Thanks again,Dustin S.