Who I have the same questioned this topic

I live remotely, this is a required device, not a luxury upgrade.  It was worked well since November for 90 days.  Now it does not work.  At All.  I have tried everything, GPS signal 9, put by a window, reset to factory, rebooted many times, set it up as only device on router, reset, reboot.

Same thing, gets to 11b pretty quick and  nothing....