I do not know if I did something wrong, but I just saw that from the desktop application for Mycloud ex2 Ultra, I can delete files not being the administrator.
That is, I created a different account to the administrator to see how users work from the desktop application, and what is my surprise when I realize that as a user I can delete files.
Since configuring shared files I have given privileges of: READ ONLY to that account and however you can delete, cut etc from the desktop application, not so from the MYCLOUD web service.
Any clarification?