I have upgraded the Collector for iOS to 10.3.1. I have a web map with feature services that I need to update. ArcGIS Online basic viewer can edit the features, as wel as the Collector on Android devices. On my iPAD the 'Submit' button is grayed out and I can't submit any record. Any clue??
yes ...
Could try a different user on the same device or the same user on another device (of same device type).
Others have reported it so maybe it's a bug.
Does it work with the current test BETA version of Collector?