restricting access to my premium.wpmudev.org accout from my client website

Hi, I would like to install Coursepress on my client website, but I can access my account on your site from my clients' WPMU DEV Dashboard. That means my client can do the same. If my client can access my WPMU DEV account and have control over other sites in my account - that is not safe for me. Is there any solution to this problem?