Please try to re-activate the unit from Ace Manager “WAN/Cellular >> Re-Activation”. A different antenna could be tested and a factory reset may be tried. I would suggest to verify the provisioning with Verizon if there is still no signal.
I do not see that choice in my Ace Manager Version 3.3.0.188 (WAN/Cellular>>ReActivation)
I have tried “Hold the RESET button for 60 seconds” to reset to factory. This did not change the situation.
I will try Verizon to see if they can help.