I can't add users

[Nur_Areza_Zulfa]

hello, please help me,

my account can’t add users, a few week ago i can do that.
i made an apps but i can’t add users.

just like this, whats wrong, please help me, thank you so much

[bonameblisto]

See here

You can hit button “User with plus-sign” on the top of page