Max 2 and Raspberry Pi monitor mode

Quick question, has anyone managed to use the HDMI as a monitor function with a Raspberry Pi..?

I have a Pi Zero that connects up via HDMI with no problems to a regular monitor

The cable from the Max2 box connects the Max 2 to a Dell laptop and a MS Surface 2017 without issue

Connect the Max2 cable to the Pi and it fails to connect and I get and error message telling me to "check the cable"

Obviously the cable works, the Pi HDMI out works so..... ?

Thoughts..?