Can't change document owner
How do I change the owner of a document in Daptiv?
Currently it is not possible to change the owner of a document in Daptiv.
To receive notifications for existing documents in workspaces, you can set up workflow notifications in those workspaces to send your workspace role notifications when documents are edited, deleted, or have new versions uploaded.
Alternatively, you can re-upload the documents so that you are the owner of them.