I have been working with a Java application (ArcGIS runtime SDK for Java) that can add features to a feature service published on ArcGIS Online. However, it is not working when I'm using my own layers, it will only work with sample layers (from a tutorial). I have published the layer and made it editable (see attached screendump) and my application does not give any errors, so it has to be something wrong with the layer.
The URL to the feature layer: https://services7.arcgis.com/B3IMWUtbv8aqMcQc/arcgis/rest/services/Points/FeatureServer/0
What could be wrong?