Calendar synchro failed from app

Hi,

Since a week, i can't synchronize my calendar with my watch. All others synchro are ok but not calendar.

On the garmin connect app calendar, i can see my program, but not on my watch. 

If i want too see the program on my watch i need to synchronize the calendar from the garmin connect web site (and not from the app)

Anyway, since last week, when i start an activity from my watch, the program doesn't start himself, i have to select it from the training menu, it's boring !

Any ideas ?