Nighthawk M6 losing 5g connection daily at the same time

We have a Nighthawk M6 running fulltime on a SIM.
We have perfect 5G connection but once a day, exactly on the same time everyday it drops its 5g connection totally. Not going back to 4G, connection is totally lost.

When we restart the device or go into airplane mode on and off, everything is working fine again for 24 hours.

The error we're receiving is Type #3, Reason #1067.

I've added the model.json in attachment.

Can someone figure out our issue?