My Mavic 2 Pro also is a "Calibrate my Compass" queen. None of the other drones ever ask. If I remember correctly, it is a "feature" of the firmware because DJI was having issues in the Inspire 2, I think..maybe. Maybe others with the M2s don't...
DJI no longer has geofencing in the US. No unlocks to worry about with DJI.
To fly in an area covered by LAANC, I use Aloft Air Control. Either on desktop, or mobile app.
You need a free account.
https://www.aloft.ai/feature/laanc/
Was it on an autonomous mission? You said it just stopped, but then you said you could control it is why I ask. It obviously did not loose control, only video downlink.
Can you power it on now and everything is normal or no video feed?