They do not know how to think outside the box, literally. Their IT department must be out of date. I got blocked after using them for about two years. I recommended it to my coworker who then started using it. We use Box at work, so we were on the same wifi/IP address. We have different prime accounts and different addresses, different everything else, but we both got flagged for suspicious activity. They would not even try to look into it to see they made an error. So do not recommend it to friends or else your account might get blocked as well!