Apple Classroom - Screen shows "Lock Screen"

Apple Classroom - Screen shows "Lock Screen" when

A couple of students in my Apple classroom class only ever show up as "Lock Screen" in my class view. Their Bluetooth is on, we've tried removing them from the class, rebooting their machines, and then re-adding but still no luck. All devices are on the same OS and have the same MDM settings.

Anyone ever ran into this issue and have a solution?

I am attaching a screenshot of what I see. Thank you in advance!