reset the watch as follows
switch off the watch.
hold power button for 30 sec
clear all settings will appear. Click on that.
turn off the watch.
Iphone steps
sign out from cloud
power off
final steps
power on watch
2.power on phone
3.remove battery saver mode from phone-- IMPORTANT
4.start pairing watch .
5. After pairing click on update software. and there you go buddy.