Signals Notebook: User cannot be added to a group in Signals Notebook Individual Edition

Keywords: Signals Notebook, Individual edition, group, user.

Details:  

The user is not appearing on the search bar when adding them to a group or when sharing a notebook with them even if the user has an active Signals Notebook account and is able to see other users. 

The issue can be fixed by repeating the activation process on https://connect.revvitysignals.com/sitesubscription/

Once the user activates their subscription again, other users will be able to find them in the same tenant.