Is anyone else experiencing issues when trying to use feature services on ArcGIS for Server 10.3.1 with the iOS version of Collector (v10.3.5)? I originally thought the issue might have been with ArcGIS server (see Missing Layers). However, I've since been able to test on the Android version of Collector (v10.3.4) and feature services from our 10.3.1 ArcGIS for Server work just fine.
This is a somewhat urgent issue for us as approximately 95% of workforce (~100+ devices) are iOS devices and this is preventing us from completing our migration to ArcGIS for Server 10.3 from 10.1.
Thanks,
Jade