Derv
Either you have a bad cable with the 30" hazro or you are right they had sent you the wrong monitor i have 3 of Hazro Hz30wie and they clearly state in my nvidia control panel that they support HDCP
My Nvidia control panel said the same but it doesn't actually support it. Try the Cyberlink BD advisor and that will say it's unsupported. I also had two Blu-Ray players say exactly the same thing. I tried two different cables (including the one that Hazro supply) and neither worked. The same cable worked on my Dell straight out the box and I had no issues at all.
Have you tried to play a Blu-Ray on your screens or are you just going by the Nvidia panel?