No Users visible

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#1

I just installed OwnCloud9 on my Ubuntu 16.04.1 Server. I don't know why but I can't see any users in my user section in the GUI. I only have one User and it is not visible. There is just a '1' next to Administrators on left. In the database the user is listed. Did I miss something?
PS: I just installed and I don't know how it would have to look if it works but I haven't seen a button to upload files or anything? On the mainpage there are the Folders on the left side but I haven't found a way until now to upload anything.
Do I have an uncomplete installation or anything?