Thank you for contacting Plugable support! Sorry to hear about this issue. I’d be more than happy to assist you.
How are these two Xiaomi monitors currently being connected to the docking station? Using the HDMI or DisplayPort outputs?
Are you connecting the TBT3-UDZ dock to your new M1 Max system using the 0.8m 40Gbps Thunderbolt 3 cable the dock shipped with? I ask because if using a third party USB-C cable it could prevent the dock from functioning correctly.
You mentioned that the monitors are recognized by macOS but aren’t displaying anything - could the monitors be set to the wrong input by accident somehow?
If you are using our cable and have verified the monitor inputs, our next step would be a troubleshooting tool that helps us find out what is going on in situations like this. Please plug the dock with your two monitors attached to it into your computer, then go to this page and follow the instructions there:
When emailing us the diagnostics results (do not post here!) please mention ticket 360460 in the subject line.
Please don’t hesitate to let us know of other questions.
Thanks again for contacting Plugable support and best wishes!
Senior Engineer | Product Owner