Hi
Just experienced that a run activity didn't sync to garmin connect. The activity is visible on the watch with all stats and map but won't transfer.
I created a new quick 3sec run and saved afterwards, amd that went well.
Tried reboot of watch and phone.
I was on 15.17 at the time, but the watch updated to 15.19b 20min after. Nothing synced after that either.
Have anyone else had similar issue and a workaround (besides manual reg).
Just in case you want to debug:
1) yes
2) yes
3) Norway