Apple Watch sync with other apps

crowleyed72

I have mapmyrun and for the last few days it's not syncing right to watch. I push the map my run on Watch to start work out. Sometimes it opens to workouts, but won't start or I just get a symbol running with circles running around it. I use mapmyrun because it syncs with mfp. Anyone use other apps that work with both the Apple Watch an mfp. I've uninstalled an reinstalled try to fix app.