I have a Samsung Galaxy S5 that was just upgraded to Marshmallow 6.01. What a disaster this has been so far. After the update my Vivoactive was no longer paired with my phone. After numerous attempts I finally uninstalled Connect and reinstalled it and the phone finally paired. But the problem is I am not receiving email notifications on my phone any more. The Vivoactive says it's connected but I am not receiveing messages on it. I have email turned on in the Connect app so I have no clue. Can anyone help?? Thanks!!!
There was a thread about a similar issue a day or so ago.
Take a look here:
https://forums.garmin.com/showthread.php?349085-Vivosmart-Hr-smart-notifications-don-t-work-with-sony-xperia-z5-compact