Unfortunately, Collector has stopped.
Did you enable sync on that service?
Depending on the version of desktop you are using you should see it when you are publishing the feature service and you are enabling the capabilities for the service. And the Collector does not fully support geometric networks currently.
Russ
Are you able to perform the same edits in the web map and see that data sync with your database? Also try refreshing you web page after you make the edit change to see if it is still there in the web map.
I am checking out my network test now and will update the thread when I am done.
Update:
I did a quick test with a sample network and my edits submitted without any issue.
Russ
This could mean there is an issue with the service and the server is not accepting the features.
Russ