Why Esri_anonimous ?

I am creating a python toolbox that will be used when the user edit a feature service. I created fields to enable editor tracking. I want users to be able to identify who created or edited the features. When I finished running the tool on the copy of the feature service I see the correct creator name (iwilson, my windows username), but after syncronizing the edits with the server the creator and editor fields change to blank , the creation date and last edit time change to 12:00:00 am. When I create a local copy again, the creator and editor fields are "Esri_anonymous" and the database used to create the feature also shows Esri_anonymous instead of iwilson. Why is this happening and how can I keep iwilson permanently in the feature service and database?

I am attaching pictures of my service properties and a feature table. Thank you for any help!!!
Attachment 27029
Attachment 27030

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