On windows 10 mobile CU 15063.2 the notification dont work. Pebble time round 4.3 frimware.
I have try turn on/off notification in phone , in app , reconect watch.
Aftet some time cca 1h , after launching the app it cant connect to watch. I must disabble conection in bt setting of my phone and connect watch . But notification still dont work
EDIT: After few hours it start working. I don't know why or for how long but now it works !!!