You are correct this is a staff failure, the failure lies in using the software in the first place.
If we agree that the current situation is so exceptional that we need to fully monitor all students taking exams (and that's still a big if, I also am a university teacher, we don't use any monitoring system. There are other solutions as well such as taking oral exams...), one could simply hire a bunch of proctors who watch the video feed. Considering the savings that universities have made they could send one to everyone's home even.
If we agree that the current situation is so exceptional that we need to fully monitor all students taking exams (and that's still a big if, I also am a university teacher, we don't use any monitoring system. There are other solutions as well such as taking oral exams...), one could simply hire a bunch of proctors who watch the video feed. Considering the savings that universities have made they could send one to everyone's home even.