Does this product comes with any configuration or security key? If it has configuration key, then you have to explicitly enable it. By default this will be disabled. After this, you have to synchronize the application.
This is unlikely however if this has any security key, make sure the access is set to full control.
are you trying to change the permission by clicking permissions button in users form…? try editing the permission through usergroups form in your case select the Admin user group and check the permissions…