I am having issue with offline editing in Collector app. For online editing both AGOL, and collector app both work fine. Then I downloaded the web map in collector app and after adding few features when I tried to sync. Collector syncs the updates (without any error message, sync bar goes to 40% then disappears and show like sync is complete), but they never reach to Server.
I am using ArcGIS Server 10.3.1
Collector app on IOS 10.3.5