Published apps in Qlik Sense are not editable.
Try like this:
1. Publish the app to stream (with or without task)
2. Duplicate the app and edit the duplicate in 'my work' area of hub
3. When publishing the duplicated and updated copy of the app , elect to 'replace' an existing app
Then nothing is lost that was tied to the original published version (personal content, tasks..). you are just bringing in new approved sheets, bookmarks and stories and a new load script.
Then, You should try the "Data Load Editor" for the UNpublished app. Thus the one you created by making a duplicate, accessible through "My Work". You should be able to edit that script, until the point where you publish (and replace) that one over the original.
If that doesn't work, you might have insufficient rights on that particular document. Check that app's security access rule, and your user and roles.
Disable edit in a published app is probably done by design, to prevent that your (auto)save of an Application's intermediate state immediately shows up for the users analyzing in the LIVE version of that app.
You do have to be careful though that you don't change the app in such a way that it breaks users work. Ways of doing this will be to delete (or break) Master Dimensions or Measures, or modify the data model.
.png "Former Employee"){kind=icon}
