Cannot take Collector App Offline

[JamisonPeevyhouse]

I am new to my post, so still learning how to do the ArcOnline. My predecessor  created the database and server connections and made a collector app. It works. However when I am trying to make one making sure to include GlobalID and enable archiving and allowing attachments as described in the tutorials available. Also through the publisher allowing sync and editing capabilities. When I add the file to a basemap created by my predecessor, you can see all of it on the application. However you cannot enable offline when you try to edit the actual map. It allows you to create the point until you try to save/sync it. Is there a step that I somehow missed? Any advice will be greatly appreciated.

[ElainaO_Rourke]

Thank you for the response. I have published the service exactly how you have described and have enabled the "Feature Access" along with "Sync"

Of the published content in Portal. These are the only properties of the web map and it will not allow me to "enable offline mode"

These are the only properties of the feature layer within the web map:

[PiotrCienin]

Have You solved the problem with "enable offline mode" ?